Henry Klar Yaggi, MD
Geriatric Medicine (Internal Medicine) Physician · New Haven, CT
Henry Klar Yaggi, MD is a geriatric medicine (internal medicine) physician with a practice address in New Haven, Connecticut, and NPI 1801872510, issued on Dec 15, 2005. Check the license (Connecticut 037989, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Henry Klar Yaggi
- Credential
- MD
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- 037989 CT
Self-reported in NPPES; status is on the state search - Practice location
- 789 Howard Ave, New Haven, CT 06519
- Phone
- (203) 785-4198
- Enumerated
- Dec 15, 2005
- Record last updated
- Apr 7, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (203) 785-3826
- Medicaid ID
- 001379892 CT
- Medicare enrollment
- Enrolled (PECOS I20040216001110); accepts Medicare assignment
- Medical or professional school
- University Of Maryland School Of Medicine, 1996
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 104 in Connecticut → Look up another NPI →
Also registered at 789 Howard Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sophia Altin, MDInterventional Cardiology Physician1619152154
Verify Henry Klar Yaggi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 037989Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
41 Medicare Part D claims for 13 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of 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 practice group's MIPS final score for 2023 (Medicare payment program): 73.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Yale UniversityWest Haven, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Henry Klar Yaggi among 104 geriatric medicine (internal medicine) physician records in Connecticut
Henry Klar Yaggi, MD is one of 104 geriatric medicine (internal medicine) physician records with a practice address in Connecticut. 79% 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, 78% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1996 · median 1998 among the 68 with a school on file
- Record last updated2011 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in Connecticut
There are 104 geriatric medicine (internal medicine) physician records in Connecticut.
All 104 in Connecticut → Every provider in New Haven → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Joseph Agostini, MDNew Haven, CT 065191104832146
- Leen Bakkali, MDNew Haven, CT 065191629261193
- Jesse Chua-Reyes, M.D.New Haven, CT 065191669473724
- Leo Cooney, MDNew Haven, CT 065191992787287
- Ann Datunashvili, M.D.New Haven, CT 065191376544932
- Margaret Drickamer, M.D.New Haven, CT 065191851393573
- Terri Fried, MDNew Haven, CT 065191902889835
- Thomas Gill, MDNew Haven, CT 065191912982497
Common questions
What is Henry Klar Yaggi, MD's NPI number?
Henry Klar Yaggi, MD's National Provider Identifier (NPI) is 1801872510, issued on Dec 15, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Henry Klar Yaggi, MD located?
The NPPES record lists a practice address at 789 Howard Ave, New Haven, CT, 06519. Phone: (203) 785-4198. Providers update this record themselves, so call before visiting.
How can I verify Henry Klar Yaggi, MD's license?
NPPES lists Connecticut license number 037989, 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 Henry Klar Yaggi, MD prescribe under Medicare Part D?
In 2024, Henry Klar Yaggi, MD had 41 Medicare Part D claims for 13 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. Part D covers Medicare prescriptions only.
What is Henry Klar Yaggi, MD's MIPS final score?
The 2023 MIPS final score is 73.6 of 100, reported for the practice group. 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.