Gregory Spowart, M.D.
NPI 1669475430 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Monterey, CA
Enrolled with Medicare as Practitioner - Cardiac Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Spowart, M.D. is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in Monterey, CA (NPI 1669475430).
Provider details
- NPI number
- 1669475430
- Entity type
- Individual
- Primary specialty
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G49645 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
21 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
244 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 44 | $174 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 40 | $133 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 34 | $116 |
| Harvest of Vein Using an Endoscope33508 | 31 | $12 |
| Coronary Artery Bypass Using Artery Graft, 1 Graft33533 | 30 | $1,192 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$25 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-05-24
- Last updated
- 2017-05-01
Frequently asked questions
- What is Gregory Spowart's NPI number?
- Gregory Spowart's National Provider Identifier (NPI) is 1669475430, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Spowart's specialty?
- Gregory Spowart is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Spowart located?
- Gregory Spowart's practice location on file with NPPES is 23845 Holman Hwy, Monterey, CA 93940-5900.
- What is Gregory Spowart's phone number?
- The practice phone number listed in the NPPES registry for Gregory Spowart is (831) 644-0225.
- Does Gregory Spowart accept Medicare?
- Gregory Spowart is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Spowart's NPI active?
- Yes — Gregory Spowart's NPI (1669475430) is active in the NPPES registry as of the last update on 2017-05-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.