James G. Telfer, M.D.
Internal Medicine Physician · Scotts Valley, CA
James G. Telfer, M.D. is an internal medicine physician with a practice address in Scotts Valley, California, and NPI 1831142223, issued on May 18, 2006. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James G. Telfer
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 21445 NC
Self-reported in NPPES; status is on the state search - Practice location
- 4663 Scotts Valley Dr, Scotts Valley, CA 95066
- Phone
- (831) 458-6330
- Enumerated
- May 18, 2006
- Record last updated
- Dec 8, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid ID
- 8982348 NC
- Medicare enrollment
- Enrolled (PECOS I20080125000648); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 1971
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 4663 Scotts Valley Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sara AdkisonPhysician Assistant1780280594
- Lisa AlexanderPhysician Assistant1902876436
- Rebecca Barker, MDInternal Medicine Physician1437199841
- Christopher Bernardi, D.O.Family Medicine Physician1730529256
- Jeannette Bingham, NPFamily Nurse Practitioner1437129269
- Lilly Dickens, DNPPrimary Care Nurse Practitioner1184269516
Verify James G. Telfer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,005 Medicare Part D claims for 331 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 20 claims were for opioids.
Most prescribed
- Atorvastatin Calcium205 claims
- Levothyroxine Sodium102 claims
- Amlodipine Besylate82 claims
- Lisinopril77 claims
- Metoprolol Succinate75 claims
- Rosuvastatin Calcium75 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.
Bills Medicare through one group practice
- Sutter Bay Medical FoundationScotts Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James G. Telfer among 17,696 internal medicine physician records in California
James G. Telfer, 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 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 fileYes · 63% of these records are
- Graduated1971 · median 2004 among the 11,065 with a school on file
- Record last updated2011 · 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).
8 internal medicine physician records list a practice address in Scotts Valley
They are 8 of the 376 NPPES records with a practice address in Scotts Valley, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Scotts Valley → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Marce AbareScotts Valley, CA 950661457744708
- Rebecca Barker, MDScotts Valley, CA 950661437199841
- Darien Heron, M.D.Scotts Valley, CA 950661821078726
- Diane McGrew, MDScotts Valley, CA 950661669452173
- Vincent Nguyen, DOScotts Valley, CA 950661285212704
- Hailey RoumimperScotts Valley, CA 950661871179556
- Thanh Vu, MDScotts Valley, CA 950661396711149
- Elizabeth Brennan, M.D.Santa Cruz, CA 950651982794855
Common questions
What is James G. Telfer, M.D.'s NPI number?
James G. Telfer, M.D.'s National Provider Identifier (NPI) is 1831142223, issued on May 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James G. Telfer, M.D. located?
The NPPES record lists a practice address at 4663 Scotts Valley Dr, Scotts Valley, CA, 95066. Phone: (831) 458-6330. Providers update this record themselves, so call before visiting.
How can I verify James G. Telfer, M.D.'s license?
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 G. Telfer, M.D. prescribe under Medicare Part D?
In 2024, James G. Telfer, M.D. had 2,005 Medicare Part D claims for 331 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.