Cynthia L. Poortenga, M.D.
Family Medicine Physician · Kingsport, TN
Cynthia L. Poortenga, M.D. is a family medicine physician with a practice address in Kingsport, Tennessee, and NPI 1811991631, issued on Jun 9, 2005. Check the license (Tennessee MD0000017131, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Cynthia L. Poortenga
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD0000017131 TN
Self-reported in NPPES; status is on the state search - Practice location
- 121 E Ravine RD, Kingsport, TN 37660
- Phone
- (423) 230-4800
- Enumerated
- Jun 9, 2005
- Record last updated
- Feb 27, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (423) 230-4808
- Medicaid ID
- 3372564 TN
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,674 in Tennessee → Look up another NPI →
Also registered at 121 E Ravine RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Colton Marcum, PHARM. D.Pharmacist1902243496
- Mary Marcum, PHARM. D.Pharmacist1790122281
- Donita Presnell, R.PHPharmacist1023119047
- Cephas Sloan, PHARM.D.Pharmacist1942611009
Verify Cynthia L. Poortenga in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license MD0000017131Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 75% of the cost of the top drugs
2,002 Medicare Part D claims for 254 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Levothyroxine Sodium131 claims
- Losartan Potassium123 claims
- Amlodipine Besylate104 claims
- Lisinopril101 claims
- Atorvastatin Calcium84 claims
- Metoprolol Tartrate72 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.
Cynthia L. Poortenga among 2,674 family medicine physician records in Tennessee
Cynthia L. Poortenga, M.D. is one of 2,674 family medicine physician records with a practice address in Tennessee. 81% 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, 83% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2008 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
91 family medicine physician records list a practice address in Kingsport
They are 91 of the 1,986 NPPES records with a practice address in Kingsport, and 2,674 family medicine physician records in Tennessee.
All 2,674 in Tennessee → Every provider in Kingsport → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Parvati Ananthula, MDKingsport, TN 376601669475448
- Robert Geer, M.D.Kingsport, TN 376601346243631
- Shelton Hager, M.D.Kingsport, TN 376601407859796
- Emily Hubbs, M.D.Kingsport, TN 376601538162490
- James McCoy, M.D.Kingsport, TN 376601124021407
- Christopher Neglia, DOKingsport, TN 376601679575963
- Wendy Oberdick, MDKingsport, TN 376601659374601
- Peter Platzer, M.D.Kingsport, TN 376601285637124
Common questions
What is Cynthia L. Poortenga, M.D.'s NPI number?
Cynthia L. Poortenga, M.D.'s National Provider Identifier (NPI) is 1811991631, issued on Jun 9, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Cynthia L. Poortenga, M.D. located?
The NPPES record lists a practice address at 121 E Ravine RD, Kingsport, TN, 37660. Phone: (423) 230-4800. Providers update this record themselves, so call before visiting.
How can I verify Cynthia L. Poortenga, M.D.'s license?
NPPES lists Tennessee license number MD0000017131, 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 Cynthia L. Poortenga, M.D. prescribe under Medicare Part D?
In 2024, Cynthia L. Poortenga, M.D. had 2,002 Medicare Part D claims for 254 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.