Eva A. Olah, M.D.
Obstetrics & Gynecology Physician · Norwalk, CT
Eva A. Olah, M.D. is an obstetrics & gynecology physician with a practice address in Norwalk, Connecticut, and NPI 1508821331, issued on Apr 17, 2006. Check the license (Connecticut 042488, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Eva A. Olah
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 042488 CT
Self-reported in NPPES; status is on the state search - Practice location
- 637 West Ave, Norwalk, CT 06850
- Phone
- (203) 276-6126
- Enumerated
- Apr 17, 2006
- Record last updated
- Jul 8, 2022
- Fax
- (203) 276-6128
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 707 in Connecticut → Look up another NPI →
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A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Eva A. Olah in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 042488Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
271 Medicare Part D claims for 100 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Estradiol48 claims
- Progesterone38 claims
- Valacyclovir33 claims
- Yuvafem21 claims
- Estradiol (Twice Weekly)13 claims
- Metronidazole13 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): 79.1 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).
Eva A. Olah among 707 obstetrics & gynecology physician records in Connecticut
Eva A. Olah, M.D. is one of 707 obstetrics & gynecology physician records with a practice address in Connecticut. 81% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 48% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2022 · 65% 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 Connecticut 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 Connecticut
There are 707 obstetrics & gynecology physician records in Connecticut.
All 707 in Connecticut → Every provider in Norwalk → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Elizabeth Alexander, MDNorwalk, CT 068501669882635
- Michelle Douglas, D.O.Norwalk, CT 068501730113424
- Mindy Fishman, M.D.Norwalk, CT 068501124044490
- Alicia Kerr, M.D.Norwalk, CT 068501528074515
- Sara Lebovitz, M.D.Norwalk, CT 068501710279856
- Marianne Muchura, MDNorwalk, CT 068501518128586
- Geoffrey Schnider, MDNorwalk, CT 068501861466526
- Thomas Ayoub, MDNorwalk, CT 068511700990652
Common questions
What is Eva A. Olah, M.D.'s NPI number?
Eva A. Olah, M.D.'s National Provider Identifier (NPI) is 1508821331, issued on Apr 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Eva A. Olah, M.D. located?
The NPPES record lists a practice address at 637 West Ave, Norwalk, CT, 06850. Phone: (203) 276-6126. Providers update this record themselves, so call before visiting.
How can I verify Eva A. Olah, M.D.'s license?
NPPES lists Connecticut license number 042488, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Eva A. Olah, M.D. prescribe under Medicare Part D?
In 2024, Eva A. Olah, M.D. had 271 Medicare Part D claims for 100 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Eva A. Olah, M.D.'s MIPS final score?
The 2023 MIPS final score is 79.1 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.