Zoe Ann Gillis, MD
Obstetrics & Gynecology Physician · Ayer, MA
Zoe Ann Gillis, MD is an obstetrics & gynecology physician with a practice address in Ayer, Massachusetts, and NPI 1437174141, issued on Jul 13, 2006. Check the license (Massachusetts 229772, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Zoe Ann Gillis
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 229772 MA
Self-reported in NPPES; status is on the state search - Practice location
- 198 Groton Road, Ayer, MA 01432
- Phone
- (978) 784-9831
- Enumerated
- Jul 13, 2006
- Record last updated
- Mar 4, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (978) 772-0113
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,127 in Massachusetts → Look up another NPI →
Verify Zoe Ann Gillis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 229772Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
103 Medicare Part D claims for 31 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Yuvafem27 claims
- Estradiol17 claims
- Junel13 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.
Zoe Ann Gillis among 1,127 obstetrics & gynecology physician records in Massachusetts
Zoe Ann Gillis, MD is one of 1,127 obstetrics & gynecology physician records with a practice address in Massachusetts. 73% 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 16% of them.
- NPI issued2006 · 16% of these records are older, 50% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2009 · 64% 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 Massachusetts 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 Massachusetts
There are 1,127 obstetrics & gynecology physician records in Massachusetts.
All 1,127 in Massachusetts → Every provider in Ayer → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Jeffrey Blake, M.D.Gardner, MA 014401992792980
- Andrea Damour, M.D.Gardner, MA 014401740277730
- Inna Russell, M.D.Gardner, MA 014401376786434
- Dale Weldon, M.D.Gardner, MA 014401316004989
- Michael Berger, MDLeominster, MA 014531609361294
- Bettyann Cirillo, MDLeominster, MA 014531720030794
- Elizabeth Darr, MDLeominster, MA 014531265487680
- Sridhar Iyer, MDLeominster, MA 014531558374413
Common questions
What is Zoe Ann Gillis, MD's NPI number?
Zoe Ann Gillis, MD's National Provider Identifier (NPI) is 1437174141, issued on Jul 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Zoe Ann Gillis, MD located?
The NPPES record lists a practice address at 198 Groton Road, Ayer, MA, 01432. Phone: (978) 784-9831. Providers update this record themselves, so call before visiting.
How can I verify Zoe Ann Gillis, MD's license?
NPPES lists Massachusetts license number 229772, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Zoe Ann Gillis, MD prescribe under Medicare Part D?
In 2024, Zoe Ann Gillis, MD had 103 Medicare Part D claims for 31 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
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.