James Christopher Knapp, M.D.
Family Medicine Physician · Turlock, CA
James Christopher Knapp, M.D. is a family medicine physician with a practice address in Turlock, California, and NPI 1033208145, issued on Oct 12, 2006. Check the license (California G80371, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James Christopher Knapp
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G80371 CA
Self-reported in NPPES; status is on the state search - Practice location
- 911 E Tuolumne RD, Turlock, CA 95382
- Phone
- (209) 668-4101
- Enumerated
- Oct 12, 2006
- Record last updated
- Feb 18, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (209) 668-3758
- Medicaid ID
- GR0003770 CA
- Medicare enrollment
- Enrolled (PECOS I20091027000139); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1993
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 911 E Tuolumne RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Richard Freeman, M.D.Family Medicine Physician1417047572
- Sherman Glenn, LMFTMarriage & Family Therapist1104845213
- Scott Hennes, M.D.Family Medicine Physician1457440547
- James Houser, FNP-BCFamily Nurse Practitioner1730777061
- Ronald Johanson, M.D.Family Medicine Physician1134153299
- Jenny Kim, M.D.Family Medicine Physician1871734731
Verify James Christopher Knapp in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G80371Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.1 times the Medicare Part D claims of the average family medicine physician in 2024
14,629 Medicare Part D claims for 942 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 257 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,362 claims
- Lisinopril650 claims
- Levothyroxine Sodium574 claims
- Amlodipine Besylate548 claims
- Losartan Potassium430 claims
- Metformin Hcl424 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 MIPS final score for 2023 (Medicare payment program): 83.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $69.72
4 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Ronald Johanson, Thomas Wilson, James Maclaren PtrsTurlock, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Christopher Knapp among 17,133 family medicine physician records in California
James Christopher Knapp, 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
- Graduated1993 · median 2005 among the 10,652 with a school on file
- Record last updated2020 · 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).
43 family medicine physician records list a practice address in Turlock
They are 43 of the 1,343 NPPES records with a practice address in Turlock, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Turlock → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Rodney Avilla, DOTurlock, CA 953821790765428
- Mitchell Cohen, D.O.Turlock, CA 953821063429843
- Tiffany Gee, MDTurlock, CA 953821265499123
- Lenna Gorman, MDTurlock, CA 953821588636609
- Christopher HawleyTurlock, CA 953821073616041
- Jennifer Houston, MDTurlock, CA 953821043313018
- Ronald Johanson, M.D.Turlock, CA 953821134153299
- James Maclaren, M.D.Turlock, CA 953821497844575
Common questions
What is James Christopher Knapp, M.D.'s NPI number?
James Christopher Knapp, M.D.'s National Provider Identifier (NPI) is 1033208145, issued on Oct 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James Christopher Knapp, M.D. located?
The NPPES record lists a practice address at 911 E Tuolumne RD, Turlock, CA, 95382. Phone: (209) 668-4101. Providers update this record themselves, so call before visiting.
How can I verify James Christopher Knapp, M.D.'s license?
NPPES lists California license number G80371, 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 James Christopher Knapp, M.D. prescribe under Medicare Part D?
In 2024, James Christopher Knapp, M.D. had 14,629 Medicare Part D claims for 942 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is James Christopher Knapp, M.D.'s MIPS final score?
The 2023 MIPS final score is 83.5 of 100. 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.