Doctor profile · Federal record
Dr. Marlen Diaz, APRN-CNP
Acute Care Nurse Practitioner (CMS: Nurse Practitioner) · San Antonio, TX
- NPI 1437970126
- Accepts Medicare
- 2 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 4 locations .
- Primary practice
-
4499 Medical Dr
San Antonio, TX 782293735
(210) 575-4497 - Additional location
-
1441 N Beckley Ave
Dallas, TX 752031201
(214) 947-5000
fax (214) 947-5040 - Additional location
-
559 E Ovilla RD
Red Oak, TX 751543505
(214) 286-6565
fax (817) 533-6015 - Additional location
-
701 Secretary Dr
Arlington, TX 760151623
(817) 617-2040
fax (817) 617-2055 - Mailing address
-
3500 Oak Lawn Ave Ste Ste 460A Pmb 1574
Dallas, TX 752194308
Show 1 more location
Credentials & registration
- NPI registered
- October 2024 — 2 yrs on file
- Profile last updated
- January 30, 2026
- Year of graduation
- 2024 — 2 yrs since
- Specialty taxonomy
- 363LA2100X — NUCC code
- State license (1)
- Texas #1178704
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1437970126. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$22
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Smith+Nephew, Inc. | 1 | $22.32 |
By nature of payment
Hospital affiliations
Frequently asked questions
What is Dr. Marlen Diaz's medical specialty?
Dr. Marlen Diaz practices Acute Care Nurse Practitioner in San Antonio, TX.
Where does Dr. Marlen Diaz practice?
Dr. Marlen Diaz practices at 4499 Medical Dr, San Antonio, TX 782293735. Office phone: 2105754497.
What is Dr. Marlen Diaz's NPI?
Dr. Marlen Diaz's National Provider Identifier (NPI) is 1437970126, issued by NPPES.
Does Dr. Marlen Diaz accept Medicare assignment?
Yes. Dr. Marlen Diaz accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.