John Howarth Kirk, MD
Obstetrics & Gynecology Physician · Saint Helena, CA
John Howarth Kirk, MD is an obstetrics & gynecology physician with a practice address in Saint Helena, California, and NPI 1922020783, issued on Jul 24, 2006. Check the license (California A54807, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Howarth Kirk
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A54807 CA
Self-reported in NPPES; status is on the state search - Practice location
- 821 Saint Helena Hwy S, Saint Helena, CA 94574
- Phone
- (707) 967-7550
- Enumerated
- Jul 24, 2006
- Record last updated
- Jun 16, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (707) 963-5083
- Medicaid ID
- GR0081500 CA
- Medicare enrollment
- Enrolled (PECOS I20060227000225); may accept Medicare assignment
- Medical or professional school
- Yale University School Of Medicine, 1994
- Entity
- Type 1 · individual
Also registered at 821 Saint Helena Hwy S
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cheryl Chong, D.O.Family Medicine Physician1629368774
- Jessica Friend, APRN, NP-CFamily Nurse Practitioner1447911029
- Susan Turner, CNM, NPAdvanced Practice Midwife1790751303
Verify John Howarth Kirk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A54807Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
290 Medicare Part D claims for 84 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Estradiol77 claims
- Estradiol (Twice Weekly)20 claims
- Nystatin18 claims
- Dotti16 claims
- Progesterone15 claims
- Triamcinolone Acetonide13 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): 83.2 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: $43.33
2 payments; by number, the most common kind was food and beverage; the largest payer was Mimedx Group, 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.
One hospital affiliation
- Sutter Coast HospitalCrescent City, CA · Acute Care Hospitals2 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
4 obstetrics & gynecology physician records list a practice address in Saint Helena
They are 4 of the 232 NPPES records with a practice address in Saint Helena, and 5,088 obstetrics & gynecology physician records in California.
All 4 in Saint Helena → All 5,088 in California → Every provider in Saint Helena →
Other obstetrics & gynecology physician records in California
- Ingrid Aalami, MDSan Jose, CA1952376550
- Avisa Abaian- Eagar, M.D.Orange, CA1316057755
- Derek Abbassi, MDWalnut Creek, CA1841364155
- Ahmed Abdelaziz, MDSanta Maria, CA1790039733
- Alireza Abdollah Shamshirsaz, M.D.Palo Alto, CA1881804235
- Nicole Abell, DOVentura, CA1811243603
- Zachary AbelsonLos Angeles, CA1689237414
- Ray Abinader, M.D.Loma Linda, CA1770901548
- Tarek Abou El Kheir, M.D.San Bernardino, CA1477521789
- Nada Abou-HaibaLos Angeles, CA1134067549
Common questions
What is John Howarth Kirk, MD's NPI number?
John Howarth Kirk, MD's National Provider Identifier (NPI) is 1922020783, issued on Jul 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Howarth Kirk, MD located?
The NPPES record lists a practice address at 821 Saint Helena Hwy S, Saint Helena, CA, 94574. Phone: (707) 967-7550. Providers update this record themselves, so call before visiting.
How can I verify John Howarth Kirk, MD's license?
NPPES lists California license number A54807, 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 John Howarth Kirk, MD prescribe under Medicare Part D?
In 2024, John Howarth Kirk, MD had 290 Medicare Part D claims for 84 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is John Howarth Kirk, MD's MIPS final score?
The 2023 MIPS final score is 83.2 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.