Mary C. Hammock, MD
Internal Medicine Physician · Chattanooga, TN
Mary C. Hammock, MD is an internal medicine physician with a practice address in Chattanooga, Tennessee, and NPI 1174509640, issued on Dec 16, 2005. Check the license (Tennessee 14192, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mary C. Hammock
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 14192 TN
Self-reported in NPPES; status is on the state search - Practice location
- 725 Glenwood Dr, Chattanooga, TN 37404
- Phone
- (423) 756-5779
- Enumerated
- Dec 16, 2005
- Record last updated
- Jan 15, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (423) 242-4552
- Medicare enrollment
- Enrolled (PECOS I20100818000263); accepts Medicare assignment
- Medical or professional school
- University Of Tennessee, Hsc, College Of Medicine, 1981
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,596 in Tennessee → Look up another NPI →
Also registered at 725 Glenwood Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary C. Hammock in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 14192Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% more Medicare Part D claims than the average internal medicine physician in 2024
4,682 Medicare Part D claims for 502 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 71 claims were for opioids.
Most prescribed
- Levothyroxine Sodium258 claims
- Amlodipine Besylate176 claims
- Lisinopril165 claims
- Losartan Potassium150 claims
- Atorvastatin Calcium143 claims
- Rosuvastatin Calcium135 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Legacy Healthcare Services IncLewisville, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary C. Hammock among 2,596 internal medicine physician records in Tennessee
Mary C. Hammock, MD is one of 2,596 internal medicine physician records with a practice address in Tennessee. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 85% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1981 · median 2003 among the 1,705 with a school on file
- Record last updated2009 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
192 internal medicine physician records list a practice address in Chattanooga
They are 192 of the 7,377 NPPES records with a practice address in Chattanooga, and 2,596 internal medicine physician records in Tennessee.
All 2,596 in Tennessee → Every provider in Chattanooga → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Bosshardt, MDChattanooga, TN 374041932192994
- Collin Cherry, MDChattanooga, TN 374041659375491
- Charles Crump, MDChattanooga, TN 374041093704744
- Annesofie Dubeck-Brooks, MDChattanooga, TN 374041790774610
- Radian Florea, M.D.Chattanooga, TN 374041285627265
- Cristina Florea, MDChattanooga, TN 374041497730949
- Selmon Franklin, MDChattanooga, TN 374041841289501
- Richard Gusso, M.D.Chattanooga, TN 374041780673434
Common questions
What is Mary C. Hammock, MD's NPI number?
Mary C. Hammock, MD's National Provider Identifier (NPI) is 1174509640, issued on Dec 16, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mary C. Hammock, MD located?
The NPPES record lists a practice address at 725 Glenwood Dr, Chattanooga, TN, 37404. Phone: (423) 756-5779. Providers update this record themselves, so call before visiting.
How can I verify Mary C. Hammock, MD's license?
NPPES lists Tennessee license number 14192, as entered by the provider. Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary C. Hammock, MD prescribe under Medicare Part D?
In 2024, Mary C. Hammock, MD had 4,682 Medicare Part D claims for 502 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.