Matthew Stalker, M.D.
NPI 1669490090 · Diagnostic Radiology Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Stalker, M.D. is a Diagnostic Radiology Physician provider in San Antonio, TX (NPI 1669490090).
Provider details
- NPI number
- 1669490090
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036144474 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$206 across 2 records (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
- 2006-07-17
- Last updated
- 2025-08-05
- Certified
- 2025-08-05
Frequently asked questions
- What is Matthew Stalker's NPI number?
- Matthew Stalker's National Provider Identifier (NPI) is 1669490090, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Stalker's specialty?
- Matthew Stalker is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Stalker located?
- Matthew Stalker's practice location on file with NPPES is 311 Camden St, San Antonio, TX 78215-2012.
- What is Matthew Stalker's phone number?
- The practice phone number listed in the NPPES registry for Matthew Stalker is (210) 892-0028.
- Does Matthew Stalker accept Medicare?
- Matthew Stalker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Stalker's NPI active?
- Yes — Matthew Stalker's NPI (1669490090) is active in the NPPES registry as of the last update on 2025-08-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.