Cynthia Poortenga, M.D.
NPI 1811991631 · Family Medicine Physician · Kingsport, TN
Cynthia Poortenga, M.D. is a Family Medicine Physician provider in Kingsport, TN (NPI 1811991631).
Provider details
- NPI number
- 1811991631
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- MD0000017131 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
21 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 131 | 36 |
| Losartan Potassium | 123 | 32 |
| Amlodipine Besylate | 104 | 28 |
| Lisinopril | 101 | 30 |
| Atorvastatin Calcium | 84 | 24 |
| Metoprolol Tartrate | 72 | 25 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-09
- Last updated
- 2008-02-27
Frequently asked questions
- What is Cynthia Poortenga's NPI number?
- Cynthia Poortenga's National Provider Identifier (NPI) is 1811991631, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cynthia Poortenga's specialty?
- Cynthia Poortenga is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Cynthia Poortenga located?
- Cynthia Poortenga's practice location on file with NPPES is 121 E Ravine Rd, Kingsport, TN 37660-3800.
- What is Cynthia Poortenga's phone number?
- The practice phone number listed in the NPPES registry for Cynthia Poortenga is (423) 230-4800.
- Is Cynthia Poortenga's NPI active?
- Yes — Cynthia Poortenga's NPI (1811991631) is active in the NPPES registry as of the last update on 2008-02-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.