Jeffrey F. Parker, M.D.
Internal Medicine Physician · Eureka, CA
Jeffrey F. Parker, M.D. is an internal medicine physician with a practice address in Eureka, California, and NPI 1689650889, issued on Dec 20, 2005. Check the license (California C50777, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jeffrey F. Parker
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- C50777 CA
4301029520 MI
Self-reported in NPPES; status is on the state search - Practice location
- 3200 Walford Ave Ste A, Eureka, CA 95503
- Phone
- (707) 443-3354
- Enumerated
- Dec 20, 2005
- Record last updated
- Apr 5, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (707) 443-3356
- Medicaid ID
- 1689650889 MI
- Medicare enrollment
- Enrolled (PECOS I20031212000798); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Jeffrey F. Parker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C50777Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
25% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,370 Medicare Part D claims for 148 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 170 claims were for opioids.
Most prescribed
- Amlodipine Besylate124 claims
- Alprazolam97 claims
- Lisinopril81 claims
- Metoprolol Tartrate71 claims
- Atorvastatin Calcium64 claims
- Hydrocodone-Acetaminophen64 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: $1,255.86
69 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Bills Medicare through 2 group practices
- Michigan Healthcare Professionals PCFarmington Hills, MI
- Spine Sports And Occupational Medicine PCAllen Park, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jeffrey F. Parker among 17,696 internal medicine physician records in California
Jeffrey F. Parker, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% 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, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1969 · median 2004 among the 11,065 with a school on file
- Record last updated2018 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in California
There are 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Eureka → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Stuart Cataldo, MDEureka, CA 955031962507590
- Gloria Abels, MDEureka, CA 955011235236662
- Malia Honda, M.D., M.S.Eureka, CA 955011689094989
- John Irvine, MDEureka, CA 955011861598419
- Bruce Kessler, MDEureka, CA 955011811093461
- Neil Kushner, MDEureka, CA 955011902905458
- Win Kyin, MDEureka, CA 955011902759525
- Eurides Lopes, M.D.Eureka, CA 955011447511803
Common questions
What is Jeffrey F. Parker, M.D.'s NPI number?
Jeffrey F. Parker, M.D.'s National Provider Identifier (NPI) is 1689650889, issued on Dec 20, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Jeffrey F. Parker, M.D. located?
The NPPES record lists a practice address at 3200 Walford Ave Ste A, Eureka, CA, 95503. Phone: (707) 443-3354. Providers update this record themselves, so call before visiting.
How can I verify Jeffrey F. Parker, M.D.'s license?
NPPES lists California license number C50777, 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 Jeffrey F. Parker, M.D. prescribe under Medicare Part D?
In 2024, Jeffrey F. Parker, M.D. had 2,370 Medicare Part D claims for 148 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.