NPPES file of Aug 9, 2026

Douglas Freeman, M.D.

Family Medicine Physician · Fairfield, CA

Douglas Freeman, M.D. is a family medicine physician with a practice address in Fairfield, California, and NPI 1588760110, issued on Sep 14, 2006. Check the license (California C 51473, 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
1588760110
Name
Douglas Freeman
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
C 51473 CA
Self-reported in NPPES; status is on the state search
Practice location
2458 Hilborn RD, Fairfield, CA 94534
Phone
(707) 646-5500
Enumerated
Sep 14, 2006
Record last updated
May 17, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(707) 646-5501
Medicare enrollment
Enrolled (PECOS I20040514001225); accepts Medicare assignment
Medical or professional school
Saint Louis University School Of Medicine, 1995
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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8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →

Also registered at 2458 Hilborn RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Amanda Adkins, M.D.Internal Medicine Physician1568635704
  2. Ho-Hin Choy, M.D.Cardiovascular Disease Physician1083008262
  3. Michelle Church, M.D.Pediatric Adolescent Medicine Physician1659426575
  4. Sarah Digeorge, NPAcute Care Nurse Practitioner1598443897
  5. Kalsang Dorji, DNP, FNP-BCFamily Nurse Practitioner1861056640
  6. Judith Flandez, PA-CPhysician Assistant1316482250

Verify Douglas Freeman in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C 51473    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.3 times the Medicare Part D claims of the average family medicine physician in 2024

8,106 Medicare Part D claims for 545 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 195 claims were for opioids.

  1. Douglas Freeman8,106
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium600 claims
  2. Amlodipine Besylate432 claims
  3. Losartan Potassium254 claims
  4. Levothyroxine Sodium243 claims
  5. Metformin Hcl238 claims
  6. Omeprazole233 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: $115.66

1 payment: food and beverage; the largest payer was Lilly USA, LLC. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Douglas Freeman$115.66
  2. Specialty average$902.55

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. Northbay Health Medical FoundationRio Vista, CA
  2. Northbay Physicians Surgery Center, LLCFairfield, CA

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

Douglas Freeman among 17,133 family medicine physician records in California

Douglas Freeman, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% 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 6% of them.

  • NPI issued2006 · 6% of these records are older, 59% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated1995 · median 2005 among the 10,652 with a school on file
  • Record last updated2010 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

67 family medicine physician records list a practice address in Fairfield

They are 67 of the 3,595 NPPES records with a practice address in Fairfield, and 17,133 family medicine physician records in California.

All 17,133 in California → Every provider in Fairfield → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Jason Booth, MDFairfield, CA 945341215236443
  2. Daniel Ferrick, M.D.Fairfield, CA 945341942397260
  3. Vanessa Franco, MDFairfield, CA 945341255481305
  4. Ehsan Ghods, D.O.Fairfield, CA 945341386663508
  5. Bryan Holcomb, MDFairfield, CA 945341366523516
  6. Alina Hongsakaphadana, M.D.Fairfield, CA 945341740304237
  7. Kelse McKinley, M.D.Fairfield, CA 945341649433178
  8. Ronald Rushford, M.D.Fairfield, CA 945341679686851

Common questions

What is Douglas Freeman, M.D.'s NPI number?

Douglas Freeman, M.D.'s National Provider Identifier (NPI) is 1588760110, issued on Sep 14, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Douglas Freeman, M.D. located?

The NPPES record lists a practice address at 2458 Hilborn RD, Fairfield, CA, 94534. Phone: (707) 646-5500. Providers update this record themselves, so call before visiting.

How can I verify Douglas Freeman, M.D.'s license?

NPPES lists California license number C 51473, 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 Douglas Freeman, M.D. prescribe under Medicare Part D?

In 2024, Douglas Freeman, M.D. had 8,106 Medicare Part D claims for 545 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.