Matthew Retzloff, M.D.
NPI 1659362218 · Reproductive Endocrinology Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Other (physician) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Retzloff, M.D. is a Reproductive Endocrinology Physician provider in San Antonio, TX (NPI 1659362218).
Provider details
- NPI number
- 1659362218
- Entity type
- Individual
- Primary specialty
- Reproductive Endocrinology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- J8736 (TX)
Specialties & taxonomies
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
20 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.
$18,628 across 54 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
- 2005-11-02
- Last updated
- 2024-08-21
- Certified
- 2024-08-13
Frequently asked questions
- What is Matthew Retzloff's NPI number?
- Matthew Retzloff's National Provider Identifier (NPI) is 1659362218, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Retzloff's specialty?
- Matthew Retzloff is listed in the NPPES registry with a primary specialty of Reproductive Endocrinology Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Retzloff located?
- Matthew Retzloff's practice location on file with NPPES is 7707 Ewing Halsell, Suite 103, San Antonio, TX 78229-4040.
- What is Matthew Retzloff's phone number?
- The practice phone number listed in the NPPES registry for Matthew Retzloff is (210) 692-0577.
- Does Matthew Retzloff accept Medicare?
- Matthew Retzloff is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Retzloff's NPI active?
- Yes — Matthew Retzloff's NPI (1659362218) is active in the NPPES registry as of the last update on 2024-08-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.