Doctor profile · Federal record
Dr. Mary Hammock, MD
Internal Medicine Physician (CMS: Internal Medicine) · Chattanooga, TN
- NPI 1174509640
- Accepts Medicare
- 45 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
725 Glenwood Dr, Suite 480
Chattanooga, TN 374041163
(423) 756-5779
fax (423) 242-4552
Credentials & registration
- NPI registered
- December 2005 — 21 yrs on file
- Profile last updated
- January 15, 2009
- Year of graduation
- 1981 — 45 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Tennessee #14192
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1174509640. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
3,551
Distinct HCPCS
10
Medicare allowed
$107,750
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
36415 |
Insertion of needle into vein for collection of blood sample | 361 | 258 | $8 | |
80053 |
Blood test, comprehensive group of blood chemicals | 334 | 253 | $10 | |
85025 |
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 308 | 250 | $8 | |
84443 |
Blood test, thyroid stimulating hormone (tsh) | 282 | 237 | $16 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 272 | 226 | $118 | |
80061 |
Blood test, lipids (cholesterol and triglycerides) | 243 | 226 | $13 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 208 | 204 | $13 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 204 | 135 | $83 | |
J3301 |
Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 200 | 23 | $1 | |
81002 |
Urinalysis, manual test | 196 | 188 | $3 |
In context: peer comparison
Among 67 peers in Chattanooga Internal Medicine Physician, average services per provider: 133. This provider delivers 27× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
2,053
Patients
737
Total drug cost
$29,504
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 240 | 87 | $3,691 |
| Amlodipine Besylate | Generic | 212 | 79 | $2,049 |
| Lisinopril | Generic | 184 | 60 | $1,678 |
| Atorvastatin Calcium | Generic | 168 | 65 | $2,638 |
| Rosuvastatin Calcium | Generic | 160 | 57 | $3,134 |
| Triamterene-Hydrochlorothiazid (Triamterene/Hydrochlorothiazid) | Brand | 136 | 42 | $1,721 |
| Omeprazole | Generic | 135 | 44 | $2,045 |
| Losartan Potassium | Generic | 124 | 42 | $2,172 |
| Gabapentin | Generic | 112 | 41 | $2,072 |
| Simvastatin | Generic | 111 | 42 | $1,106 |
Hospital affiliations
Frequently asked questions
What is Dr. Mary Hammock's medical specialty?
Dr. Mary Hammock practices Internal Medicine Physician in Chattanooga, TN.
Where does Dr. Mary Hammock practice?
Dr. Mary Hammock practices at 725 Glenwood Dr, Chattanooga, TN 374041163. Office phone: 4237565779.
What is Dr. Mary Hammock's NPI?
Dr. Mary Hammock's National Provider Identifier (NPI) is 1174509640, issued by NPPES.
Does Dr. Mary Hammock accept Medicare assignment?
Yes. Dr. Mary Hammock accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mary Hammock commonly perform?
Top Medicare-reported procedures in 2023: Insertion of needle into vein for collection of blood sample (HCPCS 36415); Blood test, comprehensive group of blood chemicals (HCPCS 80053); Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (HCPCS 85025). Source: CMS Medicare Physician & Other Practitioners file.