Doctor profile · Federal record
Dr. Gregory Forstall, M.D.
Infectious Disease Physician (CMS: Internal Medicine) · Flint, MI
- NPI 1477642486
- Accepts Medicare
- MIPS 63.8 / 100 · 2023
- 39 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
401 S Ballenger Hwy
Flint, MI 485323638
(810) 720-0639
fax (810) 230-1978 - Mailing address
-
Po Box 321068
Flint, MI 485320019
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- March 7, 2023
- Year of graduation
- 1987 — 39 yrs since
- Specialty taxonomy
- 207RI0200X — NUCC code
- State license (1)
- Michigan #4301061462
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1477642486. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,550
Distinct HCPCS
7
Medicare allowed
$251,373
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 1,409 | 250 | $78 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 599 | 122 | $117 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 257 | 203 | $128 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 188 | 159 | $171 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 39 | 20 | $95 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 39 | 20 | $49 | |
G0180 |
Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and | 19 | 18 | $50 |
In context: peer comparison
Among 3 peers in this city , average services per provider: 174. This provider delivers 15× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
648
Patients
168
Total drug cost
$393,380
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Daptomycin | Generic | 75 | 14 | $65,712 |
| Vancomycin Hcl | Generic | 75 | 25 | $8,729 |
| Biktarvy (Bictegrav/Emtricit/Tenofov Ala) | Brand | 60 | 0 | $240,277 |
| Piperacillin-Tazobactam (Piperacillin Sodium/Tazobactam) | Brand | 51 | 13 | $4,258 |
| Cefazolin Sodium | Generic | 46 | 0 | $1,614 |
| Meropenem | Generic | 46 | 0 | $6,837 |
| Ceftriaxone (Ceftriaxone Sodium) | Brand | 44 | 17 | $1,535 |
| Cefepime Hcl | Generic | 43 | 13 | $6,910 |
| Ertapenem (Ertapenem Sodium) | Brand | 42 | 15 | $29,244 |
| Cefdinir | Generic | 33 | 26 | $791 |
Hospital affiliations
Frequently asked questions
What is Dr. Gregory Forstall's medical specialty?
Dr. Gregory Forstall practices Infectious Disease Physician in Flint, MI.
Where does Dr. Gregory Forstall practice?
Dr. Gregory Forstall practices at 401 S Ballenger Hwy, Flint, MI 485323638. Office phone: 8107200639.
What is Dr. Gregory Forstall's NPI?
Dr. Gregory Forstall's National Provider Identifier (NPI) is 1477642486, issued by NPPES.
Does Dr. Gregory Forstall accept Medicare assignment?
Yes. Dr. Gregory Forstall accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gregory Forstall commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222). Source: CMS Medicare Physician & Other Practitioners file.