Doctor profile · Federal record
Dr. John Diana, M.D.
Adult Reconstructive Orthopaedic Surgery Physician (CMS: Orthopedic Surgery) · Sports Medicine (Orthopaedic Surgery) Physician · Orthopaedic Trauma Physician · Napa, CA
- NPI 1649297540
- Accepts Medicare
- MIPS 76.9 / 100 · 2023
- 30 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3273 Claremont Way, Suite 100
Napa, CA 945583306
(707) 254-7117
fax (707) 265-6435
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- October 22, 2014
- Year of graduation
- 1996 — 30 yrs since
- Specialty taxonomy
- 207XS0114X — NUCC code
- State license (1)
- California #A87859
- Medicaid
- CA #00A878590
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1649297540. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,579
Distinct HCPCS
10
Medicare allowed
$589,138
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J3301 |
Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 428 | 81 | $1 | |
27447 |
Replacement of knee joint, both sides of knee | 208 | 200 | $1,371 | |
73564 |
X-ray of knee, 4 or more views | 186 | 156 | $12 | |
73562 |
X-ray of knee, 3 views | 175 | 133 | $49 | |
73502 |
X-ray of hip, 2-3 views | 157 | 121 | $57 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 151 | 147 | $143 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 121 | 109 | $101 | |
73502 |
X-ray of hip, 2-3 views | 119 | 99 | $12 | |
27130 |
Replacement of thigh bone and hip joint with prosthesis | 118 | 115 | $1,381 | |
20985 |
Computer-assisted surgery for muscle and bone procedure | 116 | 112 | $151 |
In context: peer comparison
Among 1 peers in Napa Adult Reconstructive Orthopaedic Surgery Physician, average services per provider: 107. This provider delivers 24× the peer median.Open Payments
Industry payments received
All-time total
$157,725
Transactions
22
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Ortho Development Corporation | 14 | $155,826.59 | |
| Zimmer Biomet Holdings, INC. | 5 | $1,528.69 | |
| Avanos Medical | 2 | $264.58 | |
| Stryker Corporation | 1 | $105.63 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
185
Patients
154
Total drug cost
$554
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amoxicillin | Generic | 122 | 105 | $281 |
| Clindamycin Hcl | Generic | 26 | 21 | $95 |
| Tramadol Hcl | Generic | 19 | 14 | $64 |
| Oxycodone Hcl | Generic | 18 | 14 | $114 |
Hospital affiliations
Frequently asked questions
What is Dr. John Diana's medical specialty?
Dr. John Diana practices Adult Reconstructive Orthopaedic Surgery Physician in Napa, CA.
Where does Dr. John Diana practice?
Dr. John Diana practices at 3273 Claremont Way, Napa, CA 945583306. Office phone: 7072547117.
What is Dr. John Diana's NPI?
Dr. John Diana's National Provider Identifier (NPI) is 1649297540, issued by NPPES.
Does Dr. John Diana accept Medicare assignment?
Yes. Dr. John Diana accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Diana commonly perform?
Top Medicare-reported procedures in 2023: Injection, triamcinolone acetonide, not otherwise specified, 10 mg (HCPCS J3301); Replacement of knee joint, both sides of knee (HCPCS 27447); X-ray of knee, 4 or more views (HCPCS 73564). Source: CMS Medicare Physician & Other Practitioners file.