Doctor profile · Federal record
Dr. Michael Grenis, MD
Orthopaedic Surgery Physician (CMS: Orthopedic Surgery) · Orthopaedic Surgery Physician · Princeton, NJ
- NPI 1669546834
- Accepts Medicare
- MIPS 75.0 / 100 · 2023
- 42 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
325 Princeton Ave
Princeton, NJ 085401617
(609) 924-8131
fax (609) 924-8532
Credentials & registration
- NPI registered
- November 2006 — 20 yrs on file
- Profile last updated
- September 30, 2019
- Year of graduation
- 1984 — 42 yrs since
- Specialty taxonomy
- 207X00000X — NUCC code
- State licenses (2)
- New Jersey #25MA05473100 · Pennsylvania #MD442362
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1669546834. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,308
Distinct HCPCS
10
Medicare allowed
$162,317
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 546 | 319 | $98 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 261 | 244 | $137 | |
73110 |
X-ray of wrist, minimum of 3 views | 194 | 104 | $47 | |
J1030 |
Injection, methylprednisolone acetate, 40 mg | 177 | 131 | $6 | |
J3301 |
Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 177 | 68 | $1 | |
97110 |
Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes | 147 | 48 | $26 | |
20550 |
Injection into tendon or ligament | 126 | 94 | $62 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 122 | 122 | $122 | |
73130 |
X-ray of hand, minimum of 3 views | 114 | 86 | $42 | |
73140 |
X-ray of finger, minimum of 2 views | 86 | 60 | $43 |
In context: peer comparison
Among 12 peers in this city , average services per provider: 170. This provider delivers 14× the peer median.Open Payments
Industry payments received
All-time total
$50
Transactions
2
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Bioventus LLC | 2 | $50.11 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
71
Patients
40
Total drug cost
$475
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) | Brand | 43 | 40 | $282 |
| Cephalexin | Generic | 14 | 0 | $156 |
| Tramadol Hcl | Generic | 14 | 0 | $38 |
Frequently asked questions
What is Dr. Michael Grenis's medical specialty?
Dr. Michael Grenis practices Orthopaedic Surgery Physician in Princeton, NJ.
Where does Dr. Michael Grenis practice?
Dr. Michael Grenis practices at 325 Princeton Ave, Princeton, NJ 085401617. Office phone: 6099248131.
What is Dr. Michael Grenis's NPI?
Dr. Michael Grenis's National Provider Identifier (NPI) is 1669546834, issued by NPPES.
Does Dr. Michael Grenis accept Medicare assignment?
Yes. Dr. Michael Grenis accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Grenis commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); X-ray of wrist, minimum of 3 views (HCPCS 73110). Source: CMS Medicare Physician & Other Practitioners file.