Michael R. Nannenga, MD
Endocrinology, Diabetes & Metabolism Physician · Kingsport, TN
Michael R. Nannenga, MD is an endocrinology, diabetes & metabolism physician with a practice address in Kingsport, Tennessee, and NPI 1922104975, issued on Sep 16, 2006. Check the license (Tennessee MD46522, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Michael R. Nannenga
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- MD46522 TN
Self-reported in NPPES; status is on the state search - Practice location
- 105 W Stone Dr, Kingsport, TN 37660
- Phone
- (423) 857-2790
- Enumerated
- Sep 16, 2006
- Record last updated
- Jul 18, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (423) 857-2791
- Medicare enrollment
- Enrolled (PECOS I20110727000454); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 2005
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 148 in Tennessee → Look up another NPI →
Also registered at 105 W Stone Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- William Bestermann, M.D.Internal Medicine Physician1710057047
- Tony Bleckley, PTPhysical Therapist1619971207
- Samuel Breeding, MDOccupational Medicine Physician1316941230
Verify Michael R. Nannenga in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license MD46522Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average endocrinology, diabetes & metabolism physician in 2024
6,884 Medicare Part D claims for 933 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 44% of claims.
Most prescribed
- Levothyroxine Sodium1,507 claims
- Methimazole352 claims
- Synthroid310 claims
- Lantus Solostar258 claims
- Ozempic219 claims
- Metformin Hcl Er187 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.
Industry payments in 2024: $260.51
16 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Holston Medical Group PCKingsport, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael R. Nannenga among 148 endocrinology, diabetes & metabolism physician records in Tennessee
Michael R. Nannenga, MD is one of 148 endocrinology, diabetes & metabolism physician records with a practice address in Tennessee. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 53% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2005 · median 2003 among the 108 with a school on file
- Record last updated2011 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Tennessee
There are 148 endocrinology, diabetes & metabolism physician records in Tennessee.
All 148 in Tennessee → Every provider in Kingsport → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Manal Ahmad, M.D.Kingsport, TN 376601366068975
- Rabindra Lamichhane, MDKingsport, TN 376601073090015
- Mansoor Tanwir, MDChurch Hill, TN 376421538322664
- Ryan Kennedy, M.D.Bristol, TN 376201295053759
- Richard Jordan, MDJohnson City, TN 376041811980782
- Rashid Mahboob, MDJohnson City, TN 376041659356335
- Franklin Montenegro, MDJohnson City, TN 376041982654984
- Deepika Reddy Nallala, M.DJohnson City, TN 376041851609739
Common questions
What is Michael R. Nannenga, MD's NPI number?
Michael R. Nannenga, MD's National Provider Identifier (NPI) is 1922104975, issued on Sep 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael R. Nannenga, MD located?
The NPPES record lists a practice address at 105 W Stone Dr, Kingsport, TN, 37660. Phone: (423) 857-2790. Providers update this record themselves, so call before visiting.
How can I verify Michael R. Nannenga, MD's license?
NPPES lists Tennessee license number MD46522, 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 Michael R. Nannenga, MD prescribe under Medicare Part D?
In 2024, Michael R. Nannenga, MD had 6,884 Medicare Part D claims for 933 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.