Gregory Andreassian, M.D.,P.A.
NPI 1619973120 · Surgery Physician · Fredericksburg, TX
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Andreassian, M.D.,P.A. is a Surgery Physician provider in Fredericksburg, TX (NPI 1619973120).
Provider details
- NPI number
- 1619973120
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.,P.A.
- Sex
- Male
- Sole proprietor
- No
- License
- H0136 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
21 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-21
- Last updated
- 2022-07-21
Frequently asked questions
- What is Gregory Andreassian's NPI number?
- Gregory Andreassian's National Provider Identifier (NPI) is 1619973120, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Andreassian's specialty?
- Gregory Andreassian is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Andreassian located?
- Gregory Andreassian's practice location on file with NPPES is 205 W Windcrest St Ste 130, Fredericksburg, TX 78624-4478.
- What is Gregory Andreassian's phone number?
- The practice phone number listed in the NPPES registry for Gregory Andreassian is (830) 997-6773.
- Does Gregory Andreassian accept Medicare?
- Gregory Andreassian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Andreassian's NPI active?
- Yes — Gregory Andreassian's NPI (1619973120) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.