Sarah Singer Rivera, M.D.
Obstetrics & Gynecology Physician · Westminster, MD
Sarah Singer Rivera, M.D. is an obstetrics & gynecology physician with a practice address in Westminster, Maryland, and NPI 1326366998, issued on May 6, 2010. Check the license (Maryland D0077642, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Sarah Singer Rivera
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- D0077642 MD
Self-reported in NPPES; status is on the state search - Practice location
- 844 Washington RD Ste 302, Westminster, MD 21157
- Phone
- (410) 876-2003
- Enumerated
- May 6, 2010
- Record last updated
- Nov 29, 2023
- Fax
- (410) 848-3009
- Medicare enrollment
- Enrolled (PECOS I20141010001519); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,034 in Maryland → Look up another NPI →
Also registered at 844 Washington RD Ste 302
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joseph AduObstetrics & Gynecology Physician1669965067
- Muna Alam, DOObstetrics & Gynecology Physician1376895557
- Casey Blessing, CNMAdvanced Practice Midwife1780383224
- Emilynne Buchanan, DOObstetrics & Gynecology Physician1194145425
- Riley Forquer, CNM, WHNP-BCAdvanced Practice Midwife1851141931
- Florentine Gnimavo, CNMAdvanced Practice Midwife1407257397
Verify Sarah Singer Rivera in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0077642Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
158 Medicare Part D claims for 61 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Estradiol58 claims
- Clobetasol Propionate12 claims
- Premarin12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 52.2 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).
Industry payments in 2024: $366.11
17 payments; by number, the most common kind was food and beverage; the largest payer was Astellas Pharma US Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Capital Womens Care LLCFrederick, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sarah Singer Rivera among 1,034 obstetrics & gynecology physician records in Maryland
Sarah Singer Rivera, M.D. is one of 1,034 obstetrics & gynecology physician records with a practice address in Maryland. 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 2010, is newer than 66% of them.
- NPI issued2010 · 66% of these records are older, 30% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2010 · median 2005 among the 597 with a school on file
- Record last updated2023 · 54% 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 Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
18 obstetrics & gynecology physician records list a practice address in Westminster
They are 18 of the 1,327 NPPES records with a practice address in Westminster, and 1,034 obstetrics & gynecology physician records in Maryland.
All 1,034 in Maryland → Every provider in Westminster → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- T Ahn, MDWestminster, MD 211571487668257
- Muna Alam, DOWestminster, MD 211571376895557
- Christos Ballas, M.D.Westminster, MD 211571184618118
- Michael Barnett, MDWestminster, MD 211571023003555
- Bassam Borakat, MDWestminster, MD 211571508840398
- Regina Costantini, M.D.Westminster, MD 211571417941451
- Eileen Garavente, M.D.Westminster, MD 211571003885948
- Lennard HerbstWestminster, MD 211571437255643
Common questions
What is Sarah Singer Rivera, M.D.'s NPI number?
Sarah Singer Rivera, M.D.'s National Provider Identifier (NPI) is 1326366998, issued on May 6, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Sarah Singer Rivera, M.D. located?
The NPPES record lists a practice address at 844 Washington RD Ste 302, Westminster, MD, 21157. Phone: (410) 876-2003. Providers update this record themselves, so call before visiting.
How can I verify Sarah Singer Rivera, M.D.'s license?
NPPES lists Maryland license number D0077642, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Sarah Singer Rivera, M.D. prescribe under Medicare Part D?
In 2024, Sarah Singer Rivera, M.D. had 158 Medicare Part D claims for 61 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Sarah Singer Rivera, M.D.'s MIPS final score?
The 2023 MIPS final score is 52.2 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.