Gregory Scott Spowart, M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Monterey, CA
Gregory Scott Spowart, M.D. is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Monterey, California, and NPI 1669475430, issued on May 24, 2005. Check the license (California G49645, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gregory Scott Spowart
- Credential
- M.D.
- Primary taxonomy
- Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
- License number
- G49645 CA
Self-reported in NPPES; status is on the state search - Practice location
- 23845 Holman Hwy, Monterey, CA 93940
- Phone
- (831) 644-0225
- Enumerated
- May 24, 2005
- Record last updated
- May 1, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicaid ID
- 00G496450 CA
- Medicare enrollment
- Enrolled (PECOS I20081020000042); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 1981
- Entity
- Type 1 · individual
8 nearest thoracic surgery (cardiothoracic vascular surgery) physician records → All 634 in California → Look up another NPI →
Also registered at 23845 Holman Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nathan Lewandowski, M.D.Family Medicine Physician1124315601
- Linda-Lee Myers, MDFamily Medicine Physician1962405464
Verify Gregory Scott Spowart in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G49645Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% fewer Medicare Part D claims than the average thoracic surgery (cardiothoracic vascular surgery) physician in 2024
63 Medicare Part D claims for 28 beneficiaries, against an average of 101 among the 2,587 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
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): 77.8 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: $24.89
1 payment: food and beverage; the largest payer was Abbott Laboratories. The 4,047 providers of this specialty with any payment received $7,828.84 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
- Montage Medical GroupMonterey, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Scott Spowart among 634 thoracic surgery (cardiothoracic vascular surgery) physician records in California
Gregory Scott Spowart, M.D. is one of 634 thoracic surgery (cardiothoracic vascular surgery) physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1981 · median 1997 among the 408 with a school on file
- Record last updated2017 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208G00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers in California
There are 634 thoracic surgery (cardiothoracic vascular surgery) physician records in California.
All 634 in California → Every provider in Monterey → Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician nationwide →
The 8 thoracic surgery (cardiothoracic vascular surgery) physician records with the nearest ZIP codes
- Ambreen Laeeq, M.D.Monterey, CA 939401689881591
- Juan Calzetta, MDSalinas, CA 939011427034685
- Vincent De Filippi, MDSalinas, CA 939011053302257
- Andreas Sakopoulos, M.D.Salinas, CA 939011720067028
- Tomomi Oka, MDBurlingame, CA 940101679788749
- Carol Tabak, MDBurlingame, CA 940101760560312
- Michael Wood, MDBurlingame, CA 940101972695112
- George Allman, M.D.Daly City, CA 940151619982592
Common questions
What is Gregory Scott Spowart, M.D.'s NPI number?
Gregory Scott Spowart, M.D.'s National Provider Identifier (NPI) is 1669475430, issued on May 24, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Scott Spowart, M.D. located?
The NPPES record lists a practice address at 23845 Holman Hwy, Monterey, CA, 93940. Phone: (831) 644-0225. Providers update this record themselves, so call before visiting.
How can I verify Gregory Scott Spowart, M.D.'s license?
NPPES lists California license number G49645, 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 Gregory Scott Spowart, M.D. prescribe under Medicare Part D?
In 2024, Gregory Scott Spowart, M.D. had 63 Medicare Part D claims for 28 beneficiaries; the average among thoracic surgery (cardiothoracic vascular surgery) physician prescribers was 101. Part D covers Medicare prescriptions only.
What is Gregory Scott Spowart, M.D.'s MIPS final score?
The 2023 MIPS final score is 77.8 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.