John K. Doolittle, MD
Family Medicine Physician · Roseville, CA
John K. Doolittle, MD is a family medicine physician with a practice address in Roseville, California, and NPI 1053422741, issued on Aug 31, 2006. Check the license (California A69624, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John K. Doolittle
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A69624 CA
Self-reported in NPPES; status is on the state search - Practice location
- 568 N Sunrise Ave, Roseville, CA 95661
- Phone
- (916) 865-1140
- Enumerated
- Aug 31, 2006
- Record last updated
- Jun 12, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (916) 865-1145
- Medicaid ID
- 00A696240 CA
- Medicare enrollment
- Enrolled (PECOS I20081112000564); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1998
- 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 568 N Sunrise Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kevin Billups, PTAPhysical Therapy Assistant1548496771
- Marcia Blecher, PAPhysician Assistant1679652234
- Rebecca Brooks, PTPhysical Therapist1003828161
- Daniel Calvo, P.T.Physical Therapist1346464633
- Sylvia Lai, P.T.Physical Therapist1083933659
- Erica Larosa, P.T.Physical Therapist1104915065
Verify John K. Doolittle in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A69624Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
51% more Medicare Part D claims than the average family medicine physician in 2024
5,362 Medicare Part D claims for 390 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 209 claims were for opioids.
Most prescribed
- Atorvastatin Calcium327 claims
- Rosuvastatin Calcium219 claims
- Amlodipine Besylate210 claims
- Levothyroxine Sodium210 claims
- Gabapentin182 claims
- Losartan Potassium156 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 Valley Medical FoundationRoseville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John K. Doolittle among 17,133 family medicine physician records in California
John K. Doolittle, 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 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
- Graduated1998 · median 2005 among the 10,652 with a school on file
- Record last updated2015 · 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).
136 family medicine physician records list a practice address in Roseville
They are 136 of the 5,340 NPPES records with a practice address in Roseville, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Roseville → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Roger Ang, M.D.Roseville, CA 956611144251497
- Dutima Batra, M.D.Roseville, CA 956611407890288
- Christoph Beisenherz, M.D.Roseville, CA 956611013999101
- Anne Braunstein, M.D.Roseville, CA 956611316902000
- Yolanda Cheng, M.D.Roseville, CA 956611629093166
- Afshine Ghaemi, M.D.Roseville, CA 956611720080815
- William Jornlin, MDRoseville, CA 956611235112160
- Youssry Kelada, M.D.Roseville, CA 956611316919442
Common questions
What is John K. Doolittle, MD's NPI number?
John K. Doolittle, MD's National Provider Identifier (NPI) is 1053422741, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John K. Doolittle, MD located?
The NPPES record lists a practice address at 568 N Sunrise Ave, Roseville, CA, 95661. Phone: (916) 865-1140. Providers update this record themselves, so call before visiting.
How can I verify John K. Doolittle, MD's license?
NPPES lists California license number A69624, 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 John K. Doolittle, MD prescribe under Medicare Part D?
In 2024, John K. Doolittle, MD had 5,362 Medicare Part D claims for 390 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.