Dr Gregory Lee Thalken, MD - Medicare Diagnostic Radiology in Long Beach, CA

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Dr Gregory Lee Thalken, MD is a medicare enrolled "Radiology - Diagnostic Radiology" physician in Long Beach, California. He graduated from medical school in 2006 and has 20 years of diverse experience with area of expertise as Diagnostic Radiology. He is a member of the group practice Fullerton Radiology Medical Group Inc, Capital Health Multispecialty Group, University Of Arkansas For Medical Sciences, Arkansas Health Group, Fullerton Radiology Medical Group Inc, Lompoc Valley Medical Center, Inspira Health Network Medical Group Pc, Medical Foundation Inc, Hawaii Diagnostic Radiology Services Llc, Insight Chicago Inc, Memorialcare Medical Foundation, Universal Radiology Partners Of California Pc, County Of San Joaquin, Renaissance Medical Foundation, Mountain Communities Healthcare District, Placerville Radiology Medical Group Inc, Renaissance Medical Foundation, Rockford Radiology Assoc, West Valley Radiology Medical Group Inc, Integrated Imaging Consultants Llc, Nrhs Radiology Associates, Valley Physician Services Pc, Los Alamitos Radiology Group Inc, X-ray Associates Of Port Huron P C, Radx Imaging Partners Inc, Peninsula Radiological Associates Limited, Washington Radiologists Medical Group Inc, Focus Medical Imaging, Menalam Health Services Pc, Santa Cruz Radiology L L C, Prime Radiology Consultants P.c., Eastpointe Radiologists Pc, San Antonio Radiological Medical, Central Valley Imaging Medical Associates Inc, Radiology Group Pc Sc, Oklahoma Radiology Group P C, Kennewick Radiology Group Pc, Ecm Health Group Llc, Sutter Valley Medical Foundation, Universal Radiology Partners Of Nevada Llc, Temple Faculty Practice Plan Inc, Erlanger Health and his current practice location is 2801 Atlantic Ave, Long Beach, California. You can reach out to his office (for appointments etc.) via phone at (562) 933-1550.

Dr Gregory Lee Thalken is licensed to practice in California (license number C162624) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1861547317.

Contact Information

Dr Gregory Lee Thalken, MD
2801 Atlantic Ave,
Long Beach, CA 90806-1701
(562) 933-1550
Not Available

Map and Direction




Physician's Profile

Full NameDr Gregory Lee Thalken
GenderMale
SpecialityDiagnostic Radiology
Experience20 Years
Location2801 Atlantic Ave, Long Beach, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Gregory Lee Thalken graduated from medical school in 2006
  NPI Data:
  • NPI Number: 1861547317
  • Provider Enumeration Date: 01/24/2007
  • Last Update Date: 05/06/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 9830333541
  • Enrollment ID: I20190109002556

Medical Identifiers

Medical identifiers for Dr Gregory Lee Thalken such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1861547317NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2085R0202XRadiology - Diagnostic Radiology C162624 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Washington HospitalFremont, CAHospital
Baptist Health Medical Center-little RockLittle rock, ARHospital
Memorial Medical CenterModesto, CAHospital
Marshall Medical CenterPlacerville, CAHospital
Chestnut Hill HospitalPhiladelphia, PAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Fullerton Radiology Medical Group Inc458763257557
Capital Health Multispecialty Group1850689894342
University Of Arkansas For Medical Sciences40825289551176
Arkansas Health Group7911802079669
Fullerton Radiology Medical Group Inc458763257557
Lompoc Valley Medical Center973927559591
Inspira Health Network Medical Group Pc4880797570244
Medical Foundation Inc9234043712201
Hawaii Diagnostic Radiology Services Llc054725322116
Insight Chicago Inc2860894706140
Memorialcare Medical Foundation8729277314563
Universal Radiology Partners Of California Pc721437298673
County Of San Joaquin6002703436198
Renaissance Medical Foundation1153409867173
Mountain Communities Healthcare District913322713539
Placerville Radiology Medical Group Inc014338237465
Renaissance Medical Foundation1153409867173
Rockford Radiology Assoc125433074941
West Valley Radiology Medical Group Inc165826662242
Integrated Imaging Consultants Llc2567784408168
Nrhs Radiology Associates266855573166
Valley Physician Services Pc3577857333599
Los Alamitos Radiology Group Inc509271888270
X-ray Associates Of Port Huron P C539578953129
Radx Imaging Partners Inc569811304148
Peninsula Radiological Associates Limited599160357365
Washington Radiologists Medical Group Inc630592724567
Focus Medical Imaging6406999259121
Menalam Health Services Pc701231916383
Santa Cruz Radiology L L C701299695246
Prime Radiology Consultants P.c.741648504064
Eastpointe Radiologists Pc7618876327106
San Antonio Radiological Medical832503594256
Central Valley Imaging Medical Associates Inc862806495374
Radiology Group Pc Sc903200853734
Oklahoma Radiology Group P C903210168862
Kennewick Radiology Group Pc933523054936
Ecm Health Group Llc9436395225139
Sutter Valley Medical Foundation98300945152449
Universal Radiology Partners Of Nevada Llc579929525969
Temple Faculty Practice Plan Inc03455887111326
Erlanger Health1153780226502

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Gregory Lee Thalken allows following entities to bill medicare on his behalf.
Entity NameRadadvantage A Professional Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1376719666
PECOS PAC ID: 2163597899
Enrollment ID: O20150106000986
Entity NameWest Valley Radiology Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1265486427
PECOS PAC ID: 1658266622
Enrollment ID: O20190109002462
Entity NameCentral Valley Imaging Medical Associates Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1275523169
PECOS PAC ID: 8628064953
Enrollment ID: O20191112003105
Entity NameLos Robles Radiologic Associates
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1730157215
PECOS PAC ID: 0446319206
Enrollment ID: O20200107001039
Entity NameModesto Radiological Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1992747547
PECOS PAC ID: 2062300239
Enrollment ID: O20200219002631
Entity NameSutter Valley Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1174997407
PECOS PAC ID: 9830094515
Enrollment ID: O20200226000913
Entity NameKennewick Radiology Group Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1679783534
PECOS PAC ID: 9335230549
Enrollment ID: O20200303000913
Entity NameRenaissance Radiology Associates Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1275181455
PECOS PAC ID: 0345571881
Enrollment ID: O20200318002517
Entity NameSalinas Valley Radiologists Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1811950504
PECOS PAC ID: 3375536949
Enrollment ID: O20200604001230
Entity NameSpecialists In Medical Imaging Sc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1841687951
PECOS PAC ID: 2163733544
Enrollment ID: O20201001000237
Entity NameX-ray Associates Of Louisville Psc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1922046002
PECOS PAC ID: 9436146818
Enrollment ID: O20201116002340
Entity NameRadiology Services Of New York Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1184691537
PECOS PAC ID: 0648160879
Enrollment ID: O20201217000652
Entity NameSilicon Valley Diagnostic Imaging Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1629265806
PECOS PAC ID: 5496838518
Enrollment ID: O20210211001668
Entity NameFocus Medical Imaging
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1528299989
PECOS PAC ID: 6406999259
Enrollment ID: O20210513002647
Entity NameIntegrated Imaging Consultants Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1700285335
PECOS PAC ID: 2567784408
Enrollment ID: O20210910002622
Entity NameDiagnostic Radiologists Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1053368563
PECOS PAC ID: 4183510902
Enrollment ID: O20210927003357
Entity NameSanta Cruz Radiology L L C
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1346291044
PECOS PAC ID: 7012996952
Enrollment ID: O20211022001710
Entity NameRockford Radiology Assoc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1740247535
PECOS PAC ID: 1254330749
Enrollment ID: O20211203002292
Entity NameBarden Thorwarth Daughtridge Ltd
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1972597565
PECOS PAC ID: 6507756848
Enrollment ID: O20220107001236
Entity NameShps Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1790421089
PECOS PAC ID: 7315325933
Enrollment ID: O20220930000120
Entity NamePlacerville Radiology Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1700847621
PECOS PAC ID: 0143382374
Enrollment ID: O20221228002888
Entity NameNrhs Radiology Associates
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1134316169
PECOS PAC ID: 2668555731
Enrollment ID: O20230221002611
Entity NameSan Antonio Radiological Medical
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1457396947
PECOS PAC ID: 8325035942
Enrollment ID: O20230302001163
Entity NameBanner - University Hospital Based Physicians Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1013627967
PECOS PAC ID: 1052614294
Enrollment ID: O20230615002275
Entity NameOklahoma Radiology Group P C
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1841283165
PECOS PAC ID: 9032101688
Enrollment ID: O20240304003447
Entity NameFullerton Radiology Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1861451858
PECOS PAC ID: 4587632575
Enrollment ID: O20240321003509
Entity NameRadx Imaging Partners Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1366146755
PECOS PAC ID: 5698113041
Enrollment ID: O20240610003529
Entity NameCharlottesville Radiology Ltd
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1205884962
PECOS PAC ID: 1557259959
Enrollment ID: O20240624004079
Entity NameLos Alamitos Radiology Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1427005024
PECOS PAC ID: 5092718882
Enrollment ID: O20240729002278
Entity NamePeninsula Radiological Associates Limited
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1114030426
PECOS PAC ID: 5991603573
Enrollment ID: O20240829000672
Entity NameWashington Radiologists Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1851355622
PECOS PAC ID: 6305927245
Enrollment ID: O20240903000719
Entity NameHampton Roads Radiology Associates Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1174533624
PECOS PAC ID: 4880688506
Enrollment ID: O20241220000309
Entity NameX-ray Associates Of Port Huron P C
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1801967583
PECOS PAC ID: 5395789531
Enrollment ID: O20241224001294
Entity NameRenaissance Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1467633867
PECOS PAC ID: 1153409867
Enrollment ID: O20250106003722
Entity NamePrime Radiology Consultants Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1811723679
PECOS PAC ID: 7416485040
Enrollment ID: O20250121001603
Entity NameCampbell County Hospital District
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1063575611
PECOS PAC ID: 2860392529
Enrollment ID: O20250207003129
Entity NameValley Physician Services Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1467815928
PECOS PAC ID: 3577857333
Enrollment ID: O20250325000647
Entity NameDelta Radiology Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1881728327
PECOS PAC ID: 5294795308
Enrollment ID: O20250403003766

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Gregory Lee Thalken is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Gregory Lee Thalken, MD
2801 Atlantic Ave,
Long Beach, CA 90806-1701

Ph: (562) 933-1550		Dr Gregory Lee Thalken, MD
2801 Atlantic Ave,
Long Beach, CA 90806-1701

Ph: (562) 933-1550

Reviews and Comments


Radiology Doctors in Long Beach, CA

Dr. Natalie Maya Sardjono, M.D.
Radiology
Medicare: Accepting Medicare Assignments
Practice Location: 2810 Long Beach Blvd Fl 2, Long Beach, CA 90806
Phone: 562-933-7880    
Dr. Thomas Charles Gates, MD
Radiology
Medicare: Not Enrolled in Medicare
Practice Location: 1043 Elm Ave, Long Beach, CA 90813
Phone: 951-691-5123    Fax: 951-691-5156
Dr. Natalia Zarzhevsky, MD, PHD
Radiology
Medicare: Accepting Medicare Assignments
Practice Location: 2801 Atlantic Ave, Long Beach, CA 90806
Phone: 562-933-1550    Fax: 562-933-1502
Dr. Reza Lotfi, M.D.
Radiology
Medicare: Not Enrolled in Medicare
Practice Location: 5901 E 7th St, Radiology 05/114, Long Beach, CA 90822
Phone: 562-826-8000    Fax: 561-826-5425
Timothy V Bell, MD
Radiology
Medicare: Accepting Medicare Assignments
Practice Location: 4241 Long Beach Blvd, Rad-image Medical Group Inc., Long Beach, CA 90807
Phone: 562-912-2507    Fax: 484-918-2507
Kourosh Nourisamie, MD
Radiology
Medicare: Accepting Medicare Assignments
Practice Location: 4241 Long Beach Blvd, Long Beach, CA 90807
Phone: 562-912-2507    Fax: 484-918-2507
Dr. Charles Franklin Brown, M.D.
Radiology
Medicare: Accepting Medicare Assignments
Practice Location: 1045 Atlantic Ave, Suite 105, Long Beach, CA 90813
Phone: 562-437-6982    Fax: 562-624-0741

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.