Doctor profile · Federal record
Dr. Jonathan Grammer, MD
Emergency Medicine Physician (CMS: Emergency Medicine) · Brunswick, ME
- NPI 1003375189
- Accepts Medicare
- 7 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 4 locations .
- Primary practice
-
123 Medical Center Dr
Brunswick, ME 040112652
(207) 373-6000
fax (207) 373-6080 - Additional location
-
22 Station Ave Ste 102
Brunswick, ME 040112092
(207) 406-7500
fax (207) 618-5674 - Additional location
-
50 Union St
Ellsworth, ME 046051534
(207) 664-5311 - Additional location
-
1 Medical Center Dr
Morgantown, WV 265061200
(304) 293-2436
fax (304) 293-6702
Show 1 more location
Credentials & registration
- NPI registered
- March 2019 — 7 yrs on file
- Profile last updated
- April 6, 2026
- Year of graduation
- 2019 — 7 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- Maine #MD25342
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1003375189. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
460
Distinct HCPCS
4
Medicare allowed
$65,918
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99285 |
Emergency department visit with high level of medical decision making | 252 | 230 | $166 | |
99284 |
Emergency department visit with moderate level of medical decision making | 128 | 127 | $114 | |
99283 |
Emergency department visit with low level of medical decision making | 50 | 46 | $68 | |
99291 |
Critical care, first 30-74 minutes | 30 | 30 | $201 |
In context: peer comparison
Among 3 peers in Brunswick Emergency Medicine Physician, average services per provider: 75. This provider delivers 6.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
212
Patients
207
Total drug cost
$1,589
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Cephalexin | Generic | 51 | 50 | $369 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 33 | 32 | $114 |
| Prednisone | Generic | 32 | 32 | $81 |
| Ondansetron Hcl | Generic | 27 | 25 | $374 |
| Azithromycin | Generic | 17 | 17 | $118 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 16 | 16 | $184 |
| Clindamycin Hcl | Generic | 13 | 13 | $149 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 12 | 11 | $61 |
| Doxycycline Hyclate | Generic | 11 | 11 | $139 |
Hospital affiliations
Frequently asked questions
What is Dr. Jonathan Grammer's medical specialty?
Dr. Jonathan Grammer practices Emergency Medicine Physician in Brunswick, ME.
Where does Dr. Jonathan Grammer practice?
Dr. Jonathan Grammer practices at 123 Medical Center Dr, Brunswick, ME 040112652. Office phone: 2073736000.
What is Dr. Jonathan Grammer's NPI?
Dr. Jonathan Grammer's National Provider Identifier (NPI) is 1003375189, issued by NPPES.
Does Dr. Jonathan Grammer accept Medicare assignment?
Yes. Dr. Jonathan Grammer accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jonathan Grammer commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with moderate level of medical decision making (HCPCS 99284); Emergency department visit with low level of medical decision making (HCPCS 99283). Source: CMS Medicare Physician & Other Practitioners file.