NPPES file of Aug 9, 2026

Timothy N. Tidwell, MD

Internal Medicine Physician · Atascadero, CA

Timothy N. Tidwell, MD is an internal medicine physician with a practice address in Atascadero, California, and NPI 1275972325, issued on Jun 21, 2013. Check the license (California A155808, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1275972325
Name
Timothy N. Tidwell
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
A155808 CA
DR.0056805 CO
Self-reported in NPPES; status is on the state search
Practice location
5920 West Mall, Atascadero, CA 93422
Phone
(805) 466-0676
Enumerated
Jun 21, 2013
Record last updated
Oct 9, 2024
Medicare enrollment
Enrolled (PECOS I20180820003129); accepts Medicare assignment
Medical or professional school
University Of Florida College Of Medicine, 2013
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 5920 West Mall

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Colleen Lipanovich, FNPFamily Nurse Practitioner1912387119
  2. Kristen Schalck, PAPhysician Assistant1760587919
  3. Christopher Tucker, PAPhysician Assistant1942853627
  4. Lisa Vasak, M.D.Internal Medicine Physician1023081510

Verify Timothy N. Tidwell in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A155808
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.3 times the Medicare Part D claims of the average internal medicine physician in 2024

7,161 Medicare Part D claims for 537 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 63 claims were for opioids.

  1. Timothy Tidwell7,161
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium849 claims
  2. Amlodipine Besylate402 claims
  3. Levothyroxine Sodium357 claims
  4. Lisinopril253 claims
  5. Losartan Potassium249 claims
  6. Omeprazole240 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): 96.5 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.

  1. Qualityout of 100 · 30% of the final score80.3
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Bills Medicare through 2 group practices

  1. David B. HammerTempleton, CA
  2. Pacific Central Coast Health CentersSanta Maria, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Timothy N. Tidwell among 17,696 internal medicine physician records in California

Timothy N. Tidwell, 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 2013, is newer than 71% of them.

  • NPI issued2013 · 71% of these records are older, 26% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated2013 · 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).

15 internal medicine physician records list a practice address in Atascadero

They are 15 of the 992 NPPES records with a practice address in Atascadero, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Hossein Akhavan, M.D.Atascadero, CA 934221871779942
  2. Robin Alleyne, MD.Atascadero, CA 934221114957941
  3. Lymar Bik, M.D.Atascadero, CA 934221164530622
  4. Ben Cooke, MDAtascadero, CA 934221528512803
  5. Jason Green, M.D.Atascadero, CA 934221215000823
  6. Emily Luk, M.D.Atascadero, CA 934221023118007
  7. Jane McClenahan, M.D.Atascadero, CA 934221679599377
  8. Abiodun Obadina, M.D.,Atascadero, CA 934221790852945

Common questions

What is Timothy N. Tidwell, MD's NPI number?

Timothy N. Tidwell, MD's National Provider Identifier (NPI) is 1275972325, issued on Jun 21, 2013. An NPI identifies a provider in billing; it is not a license.

Where is Timothy N. Tidwell, MD located?

The NPPES record lists a practice address at 5920 West Mall, Atascadero, CA, 93422. Phone: (805) 466-0676. Providers update this record themselves, so call before visiting.

How can I verify Timothy N. Tidwell, MD's license?

NPPES lists California license number A155808, 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 Timothy N. Tidwell, MD prescribe under Medicare Part D?

In 2024, Timothy N. Tidwell, MD had 7,161 Medicare Part D claims for 537 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

What is Timothy N. Tidwell, MD's MIPS final score?

The 2023 MIPS final score is 96.5 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.