NPPES file of Aug 9, 2026

Michael David Bastasch, MD

Specialist · Fremont, CA

Michael David Bastasch, MD is a specialist with a practice address in Fremont, California, and NPI 1912962028, issued on Apr 20, 2006. Check the license (California A85084, as entered in NPPES) with the California board that licenses this profession; 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
1912962028
Name
Michael David Bastasch
Credential
MD
Primary taxonomy
Specialist 174400000X
License numbers
A85084 CA
L9092 TX
Self-reported in NPPES; status is on the state search
Practice location
39101 Civic Center Dr, Fremont, CA 94538
Phone
(510) 796-7212
Enumerated
Apr 20, 2006
Record last updated
Jun 23, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(510) 745-6469
Medicaid ID
16796101 TX
Medicare enrollment
Enrolled (PECOS I20041005000380); accepts Medicare assignment
Medical or professional school
University Of Kansas School Of Med (Kc/Wich/Sal), 1999
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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Verify Michael David Bastasch in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license A85084
    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
Find the California license search

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91% fewer Medicare Part D claims than the average specialist in 2024

125 Medicare Part D claims for 55 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 22 claims were for opioids.

  1. Michael Bastasch125
  2. Specialty average1,380

Most prescribed

  1. Tamsulosin Hcl27 claims
  2. Venlafaxine Hcl Er23 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): 97.6 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 score86.5
  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).

Industry payments in 2024: $55.28

2 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 5,844 providers of this specialty with any payment received $4,760.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Michael Bastasch$55.28
  2. Specialty average$4,760.79

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

  1. Etmc Physician Group, Inc.Athens, TX

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

Michael David Bastasch among 5,749 specialist records in California

Michael David Bastasch, MD is one of 5,749 specialist records with a practice address in California. 30% 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 7% of them.

  • NPI issued2006 · 7% of these records are older, 60% newer
  • In a Medicare fileYes · 30% of these records are
  • In the CMS Doctors and Clinicians fileYes · 19% of these records are
  • Graduated1999 · median 1989 among the 1,075 with a school on file
  • Record last updated2021 · 77% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Specialist providers in California

There are 5,749 specialist records in California.

The 8 specialist records with the nearest ZIP codes

  1. Chia-Hui Chen, BSFremont, CA 945381083748289
  2. Jye-Shern Cheng, M.D.Fremont, CA 945381598729287
  3. Stefan Haller, M.D.Fremont, CA 945381841232337
  4. John Jaureguito, MDFremont, CA 945381013044601
  5. Mimi Lin, M.D.Fremont, CA 945381386608065
  6. Stephen Nguyen, MDFremont, CA 945381912022443
  7. Urvashi Patel, P.T.Fremont, CA 945381477640852
  8. Pramela Ramachandran, MDFremont, CA 945381811022528

Common questions

What is Michael David Bastasch, MD's NPI number?

Michael David Bastasch, MD's National Provider Identifier (NPI) is 1912962028, issued on Apr 20, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Michael David Bastasch, MD located?

The NPPES record lists a practice address at 39101 Civic Center Dr, Fremont, CA, 94538. Phone: (510) 796-7212. Providers update this record themselves, so call before visiting.

How can I verify Michael David Bastasch, MD's license?

NPPES lists California license number A85084, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Michael David Bastasch, MD prescribe under Medicare Part D?

In 2024, Michael David Bastasch, MD had 125 Medicare Part D claims for 55 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.

What is Michael David Bastasch, MD's MIPS final score?

The 2023 MIPS final score is 97.6 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.