Rebecca Michelle Mazar, MD
Obstetrics & Gynecology Physician · Philadelphia, PA
Rebecca Michelle Mazar, MD is an obstetrics & gynecology physician with a practice address in Philadelphia, Pennsylvania, and NPI 1407911449, issued on Dec 27, 2006. Check the license (Pennsylvania MD432666, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Rebecca Michelle Mazar
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- MD432666 PA
25MA08341400 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 801 Spruce St, Philadelphia, PA 19107
- Phone
- (215) 829-3396
- Enumerated
- Dec 27, 2006
- Record last updated
- Dec 18, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (215) 829-3661
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,974 in Pennsylvania → Look up another NPI →
Also registered at 801 Spruce St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lara Bagby, M.S., C.G.C.Genetic Counselor (M.S.)1174554943
- Rita Borromeo, MDObstetrics & Gynecology Physician1366474942
- Paul Cohen, MDInternal Medicine Physician1013935303
- Amanda CruzAdult Psychiatric/Mental Health Registered Nurse1992451256
- Ingrid Fitzgerald, CRNPFamily Nurse Practitioner1558025494
- Lena Flower, CRNPWomen's Health Nurse Practitioner1275718611
Verify Rebecca Michelle Mazar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD432666Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 86.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Rebecca Michelle Mazar among 1,974 obstetrics & gynecology physician records in Pennsylvania
Rebecca Michelle Mazar, MD is one of 1,974 obstetrics & gynecology physician records with a practice address in Pennsylvania. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 56% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2013 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Pennsylvania
There are 1,974 obstetrics & gynecology physician records in Pennsylvania.
All 1,974 in Pennsylvania → Every provider in Philadelphia → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Rita Borromeo, MDPhiladelphia, PA 191071366474942
- Jennifer Brandenburg, MDPhiladelphia, PA 191071902830979
- Sandra Dayaratna, MDPhiladelphia, PA 191071275500712
- Michael Feinstein, MDPhiladelphia, PA 191071275592396
- Osnat Geifman-Holtzman, MDPhiladelphia, PA 191071033107057
- Jay Goldberg, M.D.Philadelphia, PA 191071780603464
- Rebecca Jackson, M.D.Philadelphia, PA 191071619934502
- Dennis Lorell, M.D.Philadelphia, PA 191071598784290
Common questions
What is Rebecca Michelle Mazar, MD's NPI number?
Rebecca Michelle Mazar, MD's National Provider Identifier (NPI) is 1407911449, issued on Dec 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Rebecca Michelle Mazar, MD located?
The NPPES record lists a practice address at 801 Spruce St, Philadelphia, PA, 19107. Phone: (215) 829-3396. Providers update this record themselves, so call before visiting.
How can I verify Rebecca Michelle Mazar, MD's license?
NPPES lists Pennsylvania license number MD432666, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Rebecca Michelle Mazar, MD's MIPS final score?
The 2023 MIPS final score is 86.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.