Joan Marie Harter, MD
Internal Medicine Physician · Oroville, CA
Joan Marie Harter, MD is an internal medicine physician with a practice address in Oroville, California, and NPI 1114971322, issued on May 20, 2006. Check the license (California G59177, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joan Marie Harter
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G59177 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2809 Olive Highway, Oroville, CA 95966
- Phone
- (530) 532-8687
- Enumerated
- May 20, 2006
- Record last updated
- Oct 30, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (530) 538-3240
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2809 Olive Highway
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joan Marie Harter in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G59177Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average internal medicine physician in 2024
8,611 Medicare Part D claims for 446 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 903 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen450 claims
- Atorvastatin Calcium317 claims
- Gabapentin267 claims
- Levothyroxine Sodium253 claims
- Omeprazole243 claims
- Ozempic225 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).
Industry payments in 2024: $618.84
21 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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.
Joan Marie Harter among 17,696 internal medicine physician records in California
Joan Marie Harter, MD 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2015 · 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).
19 internal medicine physician records list a practice address in Oroville
They are 19 of the 916 NPPES records with a practice address in Oroville, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Oroville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sidharth Bagga, MD, MBAOroville, CA 959661285865436
- Norman Baron, M.D.Oroville, CA 959661447378682
- Virgil Duvernay, MD, PHD, FACPOroville, CA 959661285681056
- Matthew Fine, M.D.Oroville, CA 959661760437446
- Anjali Kohli, M.D.Oroville, CA 959661669553533
- Linda Lay, D.O.Oroville, CA 959661164717815
- Rhea Licuanan, M.D.Oroville, CA 959661609864388
- Chakravarthy Maddipati, M.D.Oroville, CA 959661538157151
Common questions
What is Joan Marie Harter, MD's NPI number?
Joan Marie Harter, MD's National Provider Identifier (NPI) is 1114971322, issued on May 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joan Marie Harter, MD located?
The NPPES record lists a practice address at 2809 Olive Highway, Oroville, CA, 95966. Phone: (530) 532-8687. Providers update this record themselves, so call before visiting.
How can I verify Joan Marie Harter, MD's license?
NPPES lists California license number G59177, 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 Joan Marie Harter, MD prescribe under Medicare Part D?
In 2024, Joan Marie Harter, MD had 8,611 Medicare Part D claims for 446 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Joan Marie Harter, 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.