Sean M. Gunther Maher, MD
Critical Care Medicine (Internal Medicine) Physician · Sacramento, CA
Sean M. Gunther Maher, MD is a critical care medicine (internal medicine) physician with a practice address in Sacramento, California, and NPI 1851788665, issued on Apr 20, 2015. Check the license (California A173063, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sean M. Gunther Maher
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- A173063 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1508 Alhambra Blvd Ste 200, Sacramento, CA 95816
- Phone
- (916) 325-1040
- Enumerated
- Apr 20, 2015
- Record last updated
- Aug 11, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (916) 669-4100
- Medicare enrollment
- Enrolled (PECOS I20210831002373); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 723 in California → Look up another NPI →
Also registered at 1508 Alhambra Blvd Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Muhammad Afzal, M.D.Critical Care Medicine (Internal Medicine) Physician1689600553
- Imran Aurangzeb, M.D.Critical Care Medicine (Internal Medicine) Physician1831127570
- Alicia Belden, FNPFamily Nurse Practitioner1609545458
- Nathaniel Defelice, M.D.Critical Care Medicine (Internal Medicine) Physician1366761496
- Richard Defelice, M.D.Critical Care Medicine (Internal Medicine) Physician1063458495
- Kapil Dhawan, M.D.Critical Care Medicine (Internal Medicine) Physician1558385997
Verify Sean M. Gunther Maher in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A173063Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average critical care medicine (internal medicine) physician in 2024
309 Medicare Part D claims for 80 beneficiaries, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D. Brand-name drugs were 56% of claims.
Most prescribed
- Albuterol Sulfate Hfa85 claims
- Stiolto Respimat28 claims
- Anoro Ellipta23 claims
- Symbicort23 claims
- Ventolin Hfa18 claims
- Azithromycin15 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 practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $256.04
11 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 2,708 providers of this specialty with any payment received $2,958.68 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Pulmonary Medicine Associates Medical Group Inc.Roseville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sean M. Gunther Maher among 723 critical care medicine (internal medicine) physician records in California
Sean M. Gunther Maher, MD is one of 723 critical care medicine (internal medicine) physician records with a practice address in California. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 81% of them.
- NPI issued2015 · 81% of these records are older, 15% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2014 · median 2005 among the 559 with a school on file
- Record last updated2021 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in California
There are 723 critical care medicine (internal medicine) physician records in California.
All 723 in California → Every provider in Sacramento → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Muhammad Afzal, M.D.Sacramento, CA 958161689600553
- Imran Aurangzeb, M.D.Sacramento, CA 958161831127570
- Richard Defelice, M.D.Sacramento, CA 958161063458495
- Kapil Dhawan, M.D.Sacramento, CA 958161558385997
- Darshan DhinganiSacramento, CA 958161053547968
- Nathaniel Gordon, MDSacramento, CA 958161063731966
- Saman Hayatdavoudi, M.D.Sacramento, CA 958161093912958
- Daniel Ikeda, M.D.Sacramento, CA 958161730124520
Common questions
What is Sean M. Gunther Maher, MD's NPI number?
Sean M. Gunther Maher, MD's National Provider Identifier (NPI) is 1851788665, issued on Apr 20, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Sean M. Gunther Maher, MD located?
The NPPES record lists a practice address at 1508 Alhambra Blvd Ste 200, Sacramento, CA, 95816. Phone: (916) 325-1040. Providers update this record themselves, so call before visiting.
How can I verify Sean M. Gunther Maher, MD's license?
NPPES lists California license number A173063, 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 Sean M. Gunther Maher, MD prescribe under Medicare Part D?
In 2024, Sean M. Gunther Maher, MD had 309 Medicare Part D claims for 80 beneficiaries; the average among critical care medicine (internal medicine) physician prescribers was 696. Part D covers Medicare prescriptions only.
What is Sean M. Gunther Maher, MD's MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. 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.