NPPES file of Aug 9, 2026

Monica Hannon, M.D.

Obstetrics & Gynecology Physician · San Francisco, CA

Monica Hannon, M.D. is an obstetrics & gynecology physician with a practice address in San Francisco, California, and NPI 1033435904, issued on Apr 15, 2010. Check the license (California A129228, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1033435904
Name
Monica Hannon
Credential
M.D.
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
A129228 CA
Self-reported in NPPES; status is on the state search
Practice location
402 8TH Ave Ste 201, San Francisco, CA 94118
Phone
(415) 741-1000
Enumerated
Apr 15, 2010
Record last updated
Feb 16, 2024
Fax
(415) 735-3126
Medicare enrollment
Enrolled (PECOS I20140811002210); accepts Medicare assignment
Medical or professional school
George Washington University School Of Medicine, 2010
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Monica Hannon in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A129228
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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16% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024

138 Medicare Part D claims for 49 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.

  1. Monica Hannon138
  2. Specialty average165

Most prescribed

  1. Estradiol24 claims
  2. Valacyclovir15 claims
  3. Sulfamethoxazole-Trimethoprim11 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.

Monica Hannon among 5,088 obstetrics & gynecology physician records in California

Monica Hannon, M.D. is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% 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 70% of them.

  • NPI issued2010 · 70% of these records are older, 28% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 53% of these records are
  • Graduated2010 · median 2004 among the 2,700 with a school on file
  • Record last updated2024 · 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 California 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 California

There are 5,088 obstetrics & gynecology physician records in California.

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Catherine Berger-Dujmovic, MDSan Francisco, CA 941181467470070
  2. Kathryn ClarkSan Francisco, CA 941181154349769
  3. Jacqueline Fletcher, M.D.San Francisco, CA 941181982796009
  4. Nelden HagbomSan Francisco, CA 941181467481655
  5. Holly HolterSan Francisco, CA 941181740219815
  6. Susan HuangSan Francisco, CA 941181518057322
  7. Madelyn Kahn, MDSan Francisco, CA 941181861576126
  8. Frederica Lofquist, M.D.San Francisco, CA 941181750458873

Common questions

What is Monica Hannon, M.D.'s NPI number?

Monica Hannon, M.D.'s National Provider Identifier (NPI) is 1033435904, issued on Apr 15, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Monica Hannon, M.D. located?

The NPPES record lists a practice address at 402 8TH Ave Ste 201, San Francisco, CA, 94118. Phone: (415) 741-1000. Providers update this record themselves, so call before visiting.

How can I verify Monica Hannon, M.D.'s license?

NPPES lists California license number A129228, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Monica Hannon, M.D. prescribe under Medicare Part D?

In 2024, Monica Hannon, M.D. had 138 Medicare Part D claims for 49 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.