John Jeffrey Nelson, M.D.
Internal Medicine Physician · Mystic, CT
John Jeffrey Nelson, M.D. is an internal medicine physician with a practice address in Mystic, Connecticut, and NPI 1376540005, issued on Jul 7, 2005. Check the license (Connecticut 034771, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- John Jeffrey Nelson
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 034771 CT
Self-reported in NPPES; status is on the state search - Practice location
- 11 Main St Unit 11-205, Mystic, CT 06355
- Phone
- (860) 421-1090
- Enumerated
- Jul 7, 2005
- Record last updated
- Sep 11, 2024
- Fax
- (860) 421-1091
- Medicaid ID
- 001347716 CT
- Medicare enrollment
- Enrolled (PECOS I20070309000340); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 1992
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Verify John Jeffrey Nelson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 034771Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,608 Medicare Part D claims for 194 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 37 claims were for opioids.
Most prescribed
- Atorvastatin Calcium219 claims
- Amlodipine Besylate129 claims
- Losartan Potassium95 claims
- Lisinopril85 claims
- Levothyroxine Sodium82 claims
- Tamsulosin Hcl79 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.
The MIPS final score for 2023 (Medicare payment program): 93.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $16.58
1 payment: food and beverage; the largest payer was GlaxoSmithKline, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Value IN Prevention OF Connecticut PLLCMystic, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Jeffrey Nelson among 2,623 internal medicine physician records in Connecticut
John Jeffrey Nelson, M.D. is one of 2,623 internal medicine physician records with a practice address in Connecticut. 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, 89% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1992 · median 2004 among the 1,646 with a school on file
- Record last updated2024 · 61% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 internal medicine physician records list a practice address in Mystic
They are 10 of the 242 NPPES records with a practice address in Mystic, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in Mystic → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Thomas Blum, M.D.Mystic, CT 063551194710210
- Rosemary Bontempi, M.D.Mystic, CT 063551346235462
- Howard Brensilver, M.D.Mystic, CT 063551336134451
- Warren Fields, M.D.Mystic, CT 063551821083999
- Brandi Iovino, D.O.Mystic, CT 063551639303324
- David Salm, MDMystic, CT 063551184727273
- James Scarles, M.D.Mystic, CT 063551194710269
- James Sullivan, M.D.Mystic, CT 063551780679472
Common questions
What is John Jeffrey Nelson, M.D.'s NPI number?
John Jeffrey Nelson, M.D.'s National Provider Identifier (NPI) is 1376540005, issued on Jul 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Jeffrey Nelson, M.D. located?
The NPPES record lists a practice address at 11 Main St Unit 11-205, Mystic, CT, 06355. Phone: (860) 421-1090. Providers update this record themselves, so call before visiting.
How can I verify John Jeffrey Nelson, M.D.'s license?
NPPES lists Connecticut license number 034771, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Jeffrey Nelson, M.D. prescribe under Medicare Part D?
In 2024, John Jeffrey Nelson, M.D. had 2,608 Medicare Part D claims for 194 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is John Jeffrey Nelson, M.D.'s MIPS final score?
The 2023 MIPS final score is 93.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.