Colin Clawson McNamara, MD
Internal Medicine Physician · Sacramento, CA
Colin Clawson McNamara, MD is an internal medicine physician with a practice address in Sacramento, California, and NPI 1922686294, issued on Mar 30, 2021. Check the license (California 192036, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Colin Clawson McNamara
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 192036 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2315 Stockton Blvd Ste 2P101, Sacramento, CA 95817
- Phone
- (916) 734-2737
- Enumerated
- Mar 30, 2021
- Record last updated
- Nov 14, 2024
- Medicare enrollment
- Enrolled (PECOS I20241001003972); accepts Medicare assignment
- Medical or professional school
- University Of Utah School Of Medicine, 2021
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2315 Stockton Blvd Ste 2P101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Edgardo AlonsoInternal Medicine Physician1871243923
- Adrienne Atencio, MDInternal Medicine Physician1518408798
- Maria Louise AvenidoInternal Medicine Physician1275111031
- Anthony Bhe, MDInternal Medicine Physician1649439449
- Erika Blaikie, M.D.Student in an Organized Health Care Education/Training Program1407387244
- Rebecca Boxer, MDGeriatric Medicine (Internal Medicine) Physician1659304830
Verify Colin Clawson McNamara in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 192036Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average internal medicine physician in 2024
433 Medicare Part D claims for 62 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
Most prescribed
- Amlodipine Besylate31 claims
- Atorvastatin Calcium29 claims
- Gabapentin24 claims
- Fluticasone Propionate18 claims
- Duloxetine Hcl15 claims
- Levothyroxine Sodium13 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
- Regents OF The Univ OF CASacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Colin Clawson McNamara among 17,696 internal medicine physician records in California
Colin Clawson McNamara, 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 2021, is newer than 92% of them.
- NPI issued2021 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2021 · median 2004 among the 11,065 with a school on file
- Record last updated2024 · 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).
601 internal medicine physician records list a practice address in Sacramento
They are 601 of the 33,083 NPPES records with a practice address in Sacramento, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Sacramento → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Nelson Chiang, M.D.Sacramento, CA 958171326021494
- Robert Derlet, MDSacramento, CA 958171902887433
- Lynne Do, M.D.Sacramento, CA 958171386627644
- Jason Ferries, M.D.Sacramento, CA 958171609859974
- Steven Griffen, M.D.Sacramento, CA 958171053393835
- Diane Haddock, M.D.Sacramento, CA 958171013991553
- Calvin Hirsch, MDSacramento, CA 958171073597332
- Hershan Johl, MDSacramento, CA 958171255314399
Common questions
What is Colin Clawson McNamara, MD's NPI number?
Colin Clawson McNamara, MD's National Provider Identifier (NPI) is 1922686294, issued on Mar 30, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Colin Clawson McNamara, MD located?
The NPPES record lists a practice address at 2315 Stockton Blvd Ste 2P101, Sacramento, CA, 95817. Phone: (916) 734-2737. Providers update this record themselves, so call before visiting.
How can I verify Colin Clawson McNamara, MD's license?
NPPES lists California license number 192036, 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 Colin Clawson McNamara, MD prescribe under Medicare Part D?
In 2024, Colin Clawson McNamara, MD had 433 Medicare Part D claims for 62 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.