NPPES file of Aug 9, 2026

Julie D. Clark, MD

Obstetrics & Gynecology Physician · Petaluma, CA

Julie D. Clark, MD is an obstetrics & gynecology physician with a practice address in Petaluma, California, and NPI 1346216389, issued on Feb 28, 2006. Check the license (California A98041, 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
1346216389
Name
Julie D. Clark
Credential
MD
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License numbers
A98041 CA
231988 NY
Self-reported in NPPES; status is on the state search
Practice location
1550 Professional Dr Ste A, Petaluma, CA 94954
Phone
(707) 763-2900
Enumerated
Feb 28, 2006
Record last updated
Oct 20, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(707) 763-2990
Medicare enrollment
Enrolled (PECOS I20071213000430); accepts Medicare assignment
Medical or professional school
New York Medical College, 2001
Telehealth
Offers telehealth (CMS)
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 Julie D. Clark in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A98041
    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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2.6 times the Medicare Part D claims of the average obstetrics & gynecology physician in 2024

435 Medicare Part D claims for 153 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.

  1. Julie Clark435
  2. Specialty average165

Most prescribed

  1. Estradiol89 claims
  2. Premarin30 claims
  3. Clotrimazole-Betamethasone23 claims
  4. Clobetasol Propionate21 claims
  5. Gabapentin19 claims
  6. Progesterone19 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.

Industry payments in 2024: $144.04

7 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.

  1. Julie Clark$144.04
  2. Specialty average$1,030.61

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Petaluma Health Center IncPetaluma, CA
  2. Providence Medical FoundationSanta Rosa, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Julie D. Clark among 5,088 obstetrics & gynecology physician records in California

Julie D. Clark, MD 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 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 52% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 53% of these records are
  • Graduated2001 · median 2004 among the 2,700 with a school on file
  • Record last updated2021 · 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. Caroline Barnhart, MDPetaluma, CA 949541437618774
  2. Kellie Corcoran, MDPetaluma, CA 949541760817258
  3. Laurie Dibble, MDPetaluma, CA 949541487738555
  4. Anthony Kosinski, M.D.Petaluma, CA 949541588656631
  5. Elmira Manoucheri, M.D.Petaluma, CA 949541942475710
  6. Bonni Massa, M.D.Petaluma, CA 949541508933607
  7. Judith McCarthy, MDPetaluma, CA 949541770667750
  8. Fiona Redwood, M.D.Petaluma, CA 949541255323945

Common questions

What is Julie D. Clark, MD's NPI number?

Julie D. Clark, MD's National Provider Identifier (NPI) is 1346216389, issued on Feb 28, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Julie D. Clark, MD located?

The NPPES record lists a practice address at 1550 Professional Dr Ste A, Petaluma, CA, 94954. Phone: (707) 763-2900. Providers update this record themselves, so call before visiting.

How can I verify Julie D. Clark, MD's license?

NPPES lists California license number A98041, 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 Julie D. Clark, MD prescribe under Medicare Part D?

In 2024, Julie D. Clark, MD had 435 Medicare Part D claims for 153 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.