Doctor profile · Federal record
Dr. Tonya an, MD
Orthopaedic Surgery Physician (CMS: Orthopedic Surgery) · Orthopaedic Foot and Ankle Surgery Physician · Stanford, CA
- NPI 1699292045
- Accepts Medicare
- MIPS 75.5 / 100 · 2023
- 10 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
300 Pasteur Dr
Stanford, CA 943052200
(650) 723-4000 - Additional location
-
444 S San Vicente Blvd Ste 603
Los Angeles, CA 900484178
(310) 423-8900 - Additional location
-
523 E 72Nd St Fl 5
New York, NY 100214099
(616) 856-0467
Credentials & registration
- NPI registered
- August 2017 — 9 yrs on file
- Profile last updated
- April 23, 2024
- Year of graduation
- 2016 — 10 yrs since
- Specialty taxonomy
- 207X00000X — NUCC code
- State license (1)
- California #A153483
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1699292045. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
647
Distinct HCPCS
8
Medicare allowed
$64,216
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J3301 |
Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 204 | 41 | $1 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 156 | 117 | $151 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 86 | 86 | $194 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 78 | 60 | $107 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 40 | 39 | $210 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 33 | 33 | $132 | |
20605 |
Aspiration and/or injection of fluid from medium joint | 32 | 27 | $67 | |
Q3014 |
Telehealth originating site facility fee | 18 | 16 | $28 |
In context: peer comparison
Among 5 peers in Stanford Orthopaedic Surgery Physician, average services per provider: 153. This provider delivers 4.2× the peer median.Open Payments
Industry payments received
All-time total
$949
Transactions
12
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Exactech, INC. | 2 | $265.66 | |
| Stryker Corporation | 4 | $249.14 | |
| Evolution Surgical, INC | 2 | $193.85 | |
| MedShape, INC. | 1 | $149.68 | |
| Treace Medical Concepts, INC. | 2 | $64.26 | |
| Paragon 28, INC. | 1 | $26.22 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
33
Patients
24
Total drug cost
$126
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ibuprofen | Generic | 21 | 13 | $101 |
| Tramadol Hcl | Generic | 12 | 11 | $24 |
Hospital affiliations
Frequently asked questions
What is Dr. Tonya an's medical specialty?
Dr. Tonya an practices Orthopaedic Surgery Physician in Stanford, CA.
Where does Dr. Tonya an practice?
Dr. Tonya an practices at 300 Pasteur Dr, Stanford, CA 943052200. Office phone: 6507234000.
What is Dr. Tonya an's NPI?
Dr. Tonya an's National Provider Identifier (NPI) is 1699292045, issued by NPPES.
Does Dr. Tonya an accept Medicare assignment?
Yes. Dr. Tonya an accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Tonya an commonly perform?
Top Medicare-reported procedures in 2023: Injection, triamcinolone acetonide, not otherwise specified, 10 mg (HCPCS J3301); Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.