Mark J. Freeman, MD
Family Medicine Physician · Clearlake, CA
Mark J. Freeman, MD is a family medicine physician with a practice address in Clearlake, California, and NPI 1801898929, issued on Jun 1, 2005. Check the license (California G47688, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark J. Freeman
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G47688 CA
Self-reported in NPPES; status is on the state search - Practice location
- 15322 Lakeshore Dr, Clearlake, CA 95422
- Phone
- (707) 995-1362
- Enumerated
- Jun 1, 2005
- Record last updated
- Apr 17, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (707) 995-7057
- Medicaid ID
- 00G476880 CA
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 15322 Lakeshore Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jerry Douglas, MDFamily Medicine Physician1285603621
Verify Mark J. Freeman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G47688Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
21 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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): 78.3 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).
Mark J. Freeman among 17,133 family medicine physician records in California
Mark J. Freeman, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2009 · 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).
9 family medicine physician records list a practice address in Clearlake
They are 9 of the 321 NPPES records with a practice address in Clearlake, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Clearlake → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Daniel Boucher, MDClearlake, CA 954221164115549
- Sonja Derose, MDClearlake, CA 954221558849661
- Jerry Douglas, MDClearlake, CA 954221285603621
- Siqi Ma, DOClearlake, CA 954221659991933
- Gail Marquette, FNPClearlake, CA 954221205851656
- Susan Salmina, FNP-CClearlake, CA 954221700322690
- Wolfgang Schug, MDClearlake, CA 954221598798233
- John Weeks, M.D.Clearlake, CA 954221962473074
Common questions
What is Mark J. Freeman, MD's NPI number?
Mark J. Freeman, MD's National Provider Identifier (NPI) is 1801898929, issued on Jun 1, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark J. Freeman, MD located?
The NPPES record lists a practice address at 15322 Lakeshore Dr, Clearlake, CA, 95422. Phone: (707) 995-1362. Providers update this record themselves, so call before visiting.
How can I verify Mark J. Freeman, MD's license?
NPPES lists California license number G47688, 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 Mark J. Freeman, MD prescribe under Medicare Part D?
In 2024, Mark J. Freeman, MD had 21 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Mark J. Freeman, MD's MIPS final score?
The 2023 MIPS final score is 78.3 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.