Doctor profile · Federal record
Dr. Martha Diaz, PA-C
Physician Assistant · Physician Assistant · New Haven, CT
- NPI 1538481882
- Accepts Medicare
- MIPS 71.7 / 100 · 2023
- 31 yrs in practice
- Licensed in 2 states
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
25 Park St, Np1 Smilow Cancer Hospital/Ynhh
New Haven, CT 065191110
(203) 200-4176
fax (203) 200-5075
Credentials & registration
- NPI registered
- February 2010 — 16 yrs on file
- Profile last updated
- March 31, 2015
- Year of graduation
- 1995 — 31 yrs since
- Specialty taxonomy
- 363A00000X — NUCC code
- State licenses (2)
- Connecticut #000762 · Michigan #5601005665
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1538481882. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
325
Distinct HCPCS
3
Medicare allowed
$14,007
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 206 | 90 | $32 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 105 | 77 | $59 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 14 | 13 | $87 |
In context: peer comparison
Among 47 peers in this city , average services per provider: 118. This provider delivers 2.8× the peer median.Open Payments
Industry payments received
All-time total
$21
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| PFIZER INC. | 1 | $20.53 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
514
Patients
246
Total drug cost
$755,455
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prochlorperazine Maleate | Generic | 72 | 57 | $1,036 |
| Ondansetron Hcl | Generic | 58 | 42 | $646 |
| Dexamethasone | Generic | 50 | 41 | $1,198 |
| Oxycodone Hcl | Generic | 49 | 0 | $940 |
| Ondansetron Odt (Ondansetron) | Brand | 41 | 37 | $1,024 |
| Anastrozole | Generic | 39 | 16 | $1,482 |
| Eliquis (Apixaban) | Brand | 36 | 16 | $23,085 |
| Gabapentin | Generic | 34 | 16 | $731 |
| Lidocaine-Prilocaine (Lidocaine/Prilocaine) | Brand | 30 | 21 | $356 |
| Lorazepam | Generic | 29 | 0 | $123 |
Hospital affiliations
Frequently asked questions
What is Dr. Martha Diaz's medical specialty?
Dr. Martha Diaz practices Physician Assistant in New Haven, CT.
Where does Dr. Martha Diaz practice?
Dr. Martha Diaz practices at 25 Park St, New Haven, CT 065191110. Office phone: 2032004176.
What is Dr. Martha Diaz's NPI?
Dr. Martha Diaz's National Provider Identifier (NPI) is 1538481882, issued by NPPES.
Does Dr. Martha Diaz accept Medicare assignment?
Yes. Dr. Martha Diaz accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Martha Diaz commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99212); Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.