Justin Collingham, MD - Medicare Obstetrics & Gynecology in Walnut Creek, CA

Justin Collingham, MD is a medicare enrolled "Obstetrics & Gynecology - Maternal & Fetal Medicine" physician in Walnut Creek, California. His current practice location is 1656 N California Blvd, Suite 300, Walnut Creek, California. You can reach out to his office (for appointments etc.) via phone at (925) 937-5214.

Justin Collingham is licensed to practice in California (license number A90070) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1346382314.

Contact Information

Justin Collingham, MD
1656 N California Blvd, Suite 300,
Walnut Creek, CA 94596-4180
(925) 937-5214
(925) 937-5936

Map and Direction




Physician's Profile

Full NameJustin Collingham
GenderMale
SpecialityObstetrics & Gynecology - Maternal & Fetal Medicine
Location1656 N California Blvd, Walnut Creek, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1346382314
  • Provider Enumeration Date: 02/13/2007
  • Last Update Date: 12/15/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 8224065958
  • Enrollment ID: I20050725000318

Medical Identifiers

Medical identifiers for Justin Collingham such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1346382314NPI-NPPES
00A900700MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207VM0101XObstetrics & Gynecology - Maternal & Fetal Medicine A90070 (California)Primary

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. Justin Collingham allows following entities to bill medicare on his behalf.
Entity NamePermanente Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1073606299
PECOS PAC ID: 8921910225
Enrollment ID: O20031104000710

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. Justin Collingham 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
Justin Collingham, MD
Po Box 9017,
Walnut Creek, CA 94596-9001

Ph: (925) 952-2828
Justin Collingham, MD
1656 N California Blvd, Suite 300,
Walnut Creek, CA 94596-4180

Ph: (925) 937-5214

Reviews and Comments


Obstetrics & Gynecology Doctors in Walnut Creek, CA

Dr. Johanne M Poulin, MD
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 60 Amigo Rd, Walnut Creek, CA 94596
Phone: 781-331-1999    Fax: 781-331-1999
Francis Wright, MD
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 1425 S Main St, Walnut Creek, CA 94596
Phone: 925-295-4000    
Dr. Nadine Barbara Hanna, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 112 La Casa Via Ste 200, Walnut Creek, CA 94598
Phone: 925-933-4747    Fax: 925-933-1638
Mark Allen Patterson, MD
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 2657 Saklan Indian Dr Apt 2, Walnut Creek, CA 94595
Phone: 925-954-8960    
Dr. Madhavi Durga Vemulapalli, MD
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 112 La Casa Via Ste 300, Walnut Creek, CA 94598
Phone: 925-239-0012    Fax: 925-239-0011
Dr. Lillian Darlene Lanka, MD
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 634 Shadowhawk Way, Walnut Creek, CA 94595
Phone: 925-287-1750    Fax: 925-287-1760
Megan Jarvis Lavin, MD
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 320 Lennon Ln, Park Shadelands, Walnut Creek, CA 94598
Phone: 925-469-2239    

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.