Doctor profile · Federal record
Dr. William Grabenstein, M.D.
Family Medicine Physician (CMS: Family Practice) · Clarksville, TN
- NPI 1003013160
- 41 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1822 Memorial Dr
Clarksville, TN 370434605
(931) 552-8012
fax (931) 551-3118
Credentials & registration
- NPI registered
- June 2007 — 19 yrs on file
- Profile last updated
- July 29, 2015
- Year of graduation
- 1985 — 41 yrs since
- Specialty taxonomy
- 207Q00000X — NUCC code
- State license (1)
- Tennessee #MD017935
- Medicaid
- TN #3728817
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1003013160. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,563
Distinct HCPCS
10
Medicare allowed
$78,455
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 506 | 173 | $112 | |
J3301 |
Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 274 | 38 | $1 | |
96372 |
Injection of drug or substance under skin or into muscle | 189 | 37 | $12 | |
J3420 |
Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg | 114 | 18 | $1 | |
99441 |
Telephone medical discussion with physician, 5-10 minutes | 79 | 56 | $37 | |
90688 |
Influenza vaccine, quadrivalent, 0.5 ml dosage | 74 | 74 | $19 | |
G0008 |
Administration of influenza virus vaccine | 74 | 74 | $25 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 70 | 45 | $79 | |
81002 |
Urinalysis, manual test | 38 | 29 | $3 | |
87635 |
Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen | 31 | 24 | $50 |
In context: peer comparison
Among 17 peers in Clarksville Family Medicine Physician, average services per provider: 116. This provider delivers 13× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
2,298
Patients
525
Total drug cost
$90,626
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 279 | 108 | $1,282 |
| Levothyroxine Sodium | Generic | 259 | 50 | $3,052 |
| Alprazolam | Generic | 219 | 30 | $2,021 |
| Atorvastatin Calcium | Generic | 211 | 43 | $2,300 |
| Gabapentin | Generic | 163 | 25 | $1,984 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 156 | 23 | $6,439 |
| Azithromycin | Generic | 148 | 78 | $1,063 |
| Zolpidem Tartrate | Generic | 135 | 16 | $1,426 |
| Lisinopril | Generic | 112 | 23 | $673 |
| Eliquis (Apixaban) | Brand | 110 | 14 | $62,538 |
Hospital affiliations
Frequently asked questions
What is Dr. William Grabenstein's medical specialty?
Dr. William Grabenstein practices Family Medicine Physician in Clarksville, TN.
Where does Dr. William Grabenstein practice?
Dr. William Grabenstein practices at 1822 Memorial Dr, Clarksville, TN 370434605. Office phone: 9315528012.
What is Dr. William Grabenstein's NPI?
Dr. William Grabenstein's National Provider Identifier (NPI) is 1003013160, issued by NPPES.
Does Dr. William Grabenstein accept Medicare assignment?
Dr. William Grabenstein does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.
What procedures does Dr. William Grabenstein commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Injection, triamcinolone acetonide, not otherwise specified, 10 mg (HCPCS J3301); Injection of drug or substance under skin or into muscle (HCPCS 96372). Source: CMS Medicare Physician & Other Practitioners file.