Frank K. Longo, M.D.
Internal Medicine Physician · Naugatuck, CT
Frank K. Longo, M.D. is an internal medicine physician with a practice address in Naugatuck, Connecticut, and NPI 1528171295, issued on Aug 16, 2006. Check the license (Connecticut 026774, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Frank K. Longo
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 026774 CT
Self-reported in NPPES; status is on the state search - Practice location
- 58 Maple Street, Naugatuck, CT 06770
- Phone
- (203) 709-5935
- Enumerated
- Aug 16, 2006
- Record last updated
- Oct 28, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Verify Frank K. Longo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 026774Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average internal medicine physician in 2024
628 Medicare Part D claims for 201 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Atorvastatin Calcium83 claims
- Amlodipine Besylate50 claims
- Levothyroxine Sodium31 claims
- Metformin Hcl26 claims
- Escitalopram Oxalate24 claims
- Lisinopril24 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.
Frank K. Longo among 2,623 internal medicine physician records in Connecticut
Frank K. Longo, 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 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 52% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2021 · 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).
12 internal medicine physician records list a practice address in Naugatuck
They are 12 of the 299 NPPES records with a practice address in Naugatuck, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in Naugatuck → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Darrell Daniels, MDNaugatuck, CT 067701629026968
- Felix De Jesus Roman, M.D.Naugatuck, CT 067701386055069
- John Elser, MDNaugatuck, CT 067701982677894
- Adriana Ghisa, MDNaugatuck, CT 067701467425371
- Dennis Huebner, M.D.Naugatuck, CT 067701043372568
- Tracey ModesteNaugatuck, CT 067701871025973
- Kenneth Newton, MDNaugatuck, CT 067701194799700
- Carl Schiano, D.O.Naugatuck, CT 067701093743361
Common questions
What is Frank K. Longo, M.D.'s NPI number?
Frank K. Longo, M.D.'s National Provider Identifier (NPI) is 1528171295, issued on Aug 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Frank K. Longo, M.D. located?
The NPPES record lists a practice address at 58 Maple Street, Naugatuck, CT, 06770. Phone: (203) 709-5935. Providers update this record themselves, so call before visiting.
How can I verify Frank K. Longo, M.D.'s license?
NPPES lists Connecticut license number 026774, 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 Frank K. Longo, M.D. prescribe under Medicare Part D?
In 2024, Frank K. Longo, M.D. had 628 Medicare Part D claims for 201 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.