Doctor profile · Federal record
Dr. Grant Zimmerman, M.D., M.S.
Internal Medicine Physician (CMS: Internal Medicine) · Student in an Organized Health Care Education/Training Program · Columbus, OH
- NPI 1861923583
- Accepts Medicare
- 9 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
3525 Olentangy River RD Ste 4330
Columbus, OH 432143937
(614) 255-6900
fax (614) 255-6901 - Additional location
-
395 W 12Th Ave, Third Floor
Columbus, OH 432101267
(614) 293-3989 - Mailing address
-
395 W 12Th Ave, Third Floor
Columbus, OH 432101267
Credentials & registration
- NPI registered
- March 2017 — 9 yrs on file
- Profile last updated
- May 7, 2020
- Year of graduation
- 2017 — 9 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Ohio #35.135428
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1861923583. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
736
Distinct HCPCS
6
Medicare allowed
$86,512
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99239 |
Hospital discharge day management, more than 30 minutes | 193 | 182 | $110 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 192 | 123 | $114 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 161 | 104 | $76 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 149 | 148 | $167 | |
99291 |
Critical care, first 30-74 minutes | 24 | 23 | $207 | |
99238 |
Hospital discharge day management, 30 minutes or less | 17 | 17 | $78 |
In context: peer comparison
Among 166 peers in Columbus Internal Medicine Physician, average services per provider: 93. This provider delivers 7.9× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
202
Patients
151
Total drug cost
$11,126
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 29 | 28 | $97 |
| Furosemide | Generic | 25 | 22 | $115 |
| Oxycodone Hcl | Generic | 17 | 17 | $94 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 16 | 16 | $153 |
| Pantoprazole Sodium | Generic | 16 | 15 | $935 |
| Cefdinir | Generic | 14 | 14 | $252 |
| Levofloxacin | Generic | 14 | 14 | $85 |
| Cephalexin | Generic | 13 | 13 | $53 |
| Amlodipine Besylate | Generic | 12 | 0 | $87 |
| Doxycycline Hyclate | Generic | 12 | 12 | $269 |
Hospital affiliations
Frequently asked questions
What is Dr. Grant Zimmerman's medical specialty?
Dr. Grant Zimmerman practices Internal Medicine Physician in Columbus, OH.
Where does Dr. Grant Zimmerman practice?
Dr. Grant Zimmerman practices at 3525 Olentangy River RD Ste 4330, Columbus, OH 432143937. Office phone: 6142556900.
What is Dr. Grant Zimmerman's NPI?
Dr. Grant Zimmerman's National Provider Identifier (NPI) is 1861923583, issued by NPPES.
Does Dr. Grant Zimmerman accept Medicare assignment?
Yes. Dr. Grant Zimmerman accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Grant Zimmerman commonly perform?
Top Medicare-reported procedures in 2023: Hospital discharge day management (HCPCS 99239); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.