Ling Fang Guo, DO
Internal Medicine Physician · Hamden, CT
Ling Fang Guo, DO is an internal medicine physician with a practice address in Hamden, Connecticut, and NPI 1164059317, issued on Mar 26, 2020. Check the license (Connecticut 77683, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Ling Fang Guo
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 77683 CT
Self-reported in NPPES; status is on the state search - Practice location
- 2560 Dixwell Ave Ste 2B, Hamden, CT 06514
- Phone
- (203) 230-2546
- Enumerated
- Mar 26, 2020
- Record last updated
- Sep 17, 2024
- Medicare enrollment
- Enrolled (PECOS I20241205000614); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Also registered at 2560 Dixwell Ave Ste 2B
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stephanie Parrillo, PAPhysician Assistant1598904161
Verify Ling Fang Guo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 77683Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average internal medicine physician in 2024
282 Medicare Part D claims for 92 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Albuterol Sulfate Hfa14 claims
- Eliquis12 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.
Bills Medicare through one group practice
- Prohealth Physicians PCHamden, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ling Fang Guo among 2,623 internal medicine physician records in Connecticut
Ling Fang Guo, DO 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 2020, is newer than 88% of them.
- NPI issued2020 · 88% of these records are older, 9% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2021 · 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).
35 internal medicine physician records list a practice address in Hamden
They are 35 of the 1,410 NPPES records with a practice address in Hamden, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in Hamden → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Tamar Braverman, MDHamden, CT 065141639185093
- Ayesha Chaudhry, MDHamden, CT 065141841450657
- Babu Kumar, MDHamden, CT 065141295721942
- Prathibha Kumar, M.D.Hamden, CT 065141043268691
- Michael Mankus, MDHamden, CT 065141053307140
- Hafsa Nawaz, M.D.Hamden, CT 065141306804463
- Richard Slater, MDHamden, CT 065141407960826
- Adedayo Adetola, M.D.New Haven, CT 065151861498685
Common questions
What is Ling Fang Guo, DO's NPI number?
Ling Fang Guo, DO's National Provider Identifier (NPI) is 1164059317, issued on Mar 26, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Ling Fang Guo, DO located?
The NPPES record lists a practice address at 2560 Dixwell Ave Ste 2B, Hamden, CT, 06514. Phone: (203) 230-2546. Providers update this record themselves, so call before visiting.
How can I verify Ling Fang Guo, DO's license?
NPPES lists Connecticut license number 77683, 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 Ling Fang Guo, DO prescribe under Medicare Part D?
In 2024, Ling Fang Guo, DO had 282 Medicare Part D claims for 92 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.