NPPES file of Aug 9, 2026

Isabell H. Beddow, MD

Obstetrics & Gynecology Physician · San Mateo, CA

Isabell H. Beddow, MD is an obstetrics & gynecology physician with a practice address in San Mateo, California, and NPI 1942374269, issued on Nov 20, 2006. Check the license (California A69848, 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
1942374269
Name
Isabell H. Beddow
Credential
MD
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
A69848 CA
Self-reported in NPPES; status is on the state search
Practice location
616 Virginia Ave, San Mateo, CA 94402
Phone
(650) 458-8929
Enumerated
Nov 20, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicaid ID
00A698480 CA
Medicare enrollment
Enrolled (PECOS I20040401001828); accepts Medicare assignment
Medical or professional school
University Of Iowa, Rj & L Carver College Of Medicine, 1995
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 Isabell H. Beddow in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A69848
    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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52% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024

79 Medicare Part D claims for 24 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.

  1. Isabell Beddow79
  2. Specialty average165

Most prescribed

  1. Estradiol12 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: $124.57

9 payments; by number, the most common kind was food and beverage; the largest payer was Mayne Pharma Commercial LLC. 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. Isabell Beddow$124.57
  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.

Isabell H. Beddow among 5,088 obstetrics & gynecology physician records in California

Isabell H. Beddow, 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
  • Graduated1995 · median 2004 among the 2,700 with a school on file
  • Record last updated2007 · 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. Zelda De La Cruz, MDSan Mateo, CA 944021376543256
  2. Rubina Khilnani, MDSan Mateo, CA 944021750381638
  3. James Tappan, M.D.San Mateo, CA 944021801880398
  4. Charles Winkelstein, M.D.San Mateo, CA 944021477740769
  5. Shelley Adams, MDSan Mateo, CA 944011891801932
  6. John Anderson, MDSan Mateo, CA 944031013082429
  7. Maryam Arjomand, M.D.San Mateo, CA 944011689763781
  8. Sandra Beretta, MDSan Mateo, CA 944011568573889

Common questions

What is Isabell H. Beddow, MD's NPI number?

Isabell H. Beddow, MD's National Provider Identifier (NPI) is 1942374269, issued on Nov 20, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Isabell H. Beddow, MD located?

The NPPES record lists a practice address at 616 Virginia Ave, San Mateo, CA, 94402. Phone: (650) 458-8929. Providers update this record themselves, so call before visiting.

How can I verify Isabell H. Beddow, MD's license?

NPPES lists California license number A69848, 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 Isabell H. Beddow, MD prescribe under Medicare Part D?

In 2024, Isabell H. Beddow, MD had 79 Medicare Part D claims for 24 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.