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, Ochsner Clinic Llc, 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, 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, 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, Mclaren Hospital Group, 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
Temple Health - Chestnut Hill HospitalPhiladelphia, PAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Fullerton Radiology Medical Group Inc458763257555
Capital Health Multispecialty Group1850689894342
University Of Arkansas For Medical Sciences40825289551159
Arkansas Health Group7911802079645
Fullerton Radiology Medical Group Inc458763257555
Lompoc Valley Medical Center973927559590
Inspira Health Network Medical Group Pc4880797570238
Ochsner Clinic Llc82249336192845
Medical Foundation Inc9234043712211
Hawaii Diagnostic Radiology Services Llc054725322116
Insight Chicago Inc2860894706140
Memorialcare Medical Foundation8729277314555
Universal Radiology Partners Of California Pc721437298667
County Of San Joaquin6002703436199
Renaissance Medical Foundation1153409867178
Placerville Radiology Medical Group Inc014338237462
Renaissance Medical Foundation1153409867178
Rockford Radiology Assoc125433074943
West Valley Radiology Medical Group Inc165826662242
Integrated Imaging Consultants Llc2567784408163
Nrhs Radiology Associates266855573161
Valley Physician Services Pc3577857333593
Los Alamitos Radiology Group Inc509271888269
X-ray Associates Of Port Huron P C539578953128
Radx Imaging Partners Inc569811304146
Peninsula Radiological Associates Limited599160357364
Washington Radiologists Medical Group Inc630592724566
Focus Medical Imaging640699925995
Menalam Health Services Pc701231916389
Santa Cruz Radiology L L C701299695246
Eastpointe Radiologists Pc7618876327112
San Antonio Radiological Medical832503594254
Central Valley Imaging Medical Associates Inc862806495387
Radiology Group Pc Sc903200853739
Oklahoma Radiology Group P C903210168859
Kennewick Radiology Group Pc933523054934
Ecm Health Group Llc9436395225139
Sutter Valley Medical Foundation98300945152473
Universal Radiology Partners Of Nevada579929525971
Mclaren Hospital Group2365968351366
Temple Faculty Practice Plan Inc03455887111325
Erlanger Health1153780226504

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 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 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 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 NameEastpointe Radiologists PC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1881642056
PECOS PAC ID: 7618876327
Enrollment ID: O20210311002138
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 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 P.C.
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
Entity NameRadiology Group PC SC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1073573994
PECOS PAC ID: 9032008537
Enrollment ID: O20250911003284
Entity NameEcm Health Group LLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1346588852
PECOS PAC ID: 9436395225
Enrollment ID: O20250924003439
Entity NameMenalam Health Services PC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1003779596
PECOS PAC ID: 7012319163
Enrollment ID: O20260129000880

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.