Dr. Stefan Somlo, MD
- Medicare services, 2023
- 45
- MIPS score, 2024
- 87
- Hospital affiliations
- 1
- Industry payments
- $111,833
- Medical group
- 1
- Practice address
- 20 York Street, New Haven, CT 06510
- Practice phone
- Call (203) 688-5900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Yale New Haven Psychiatric Hospital (York St)
Psychiatric Inpatient Facility · New Haven, Connecticut
Find Dr. Somlo's professional email, personal email and mobile number
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Dr. Stefan Somlo is a nephrologist in New Haven, Connecticut
Dr. Somlo practices at Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut.
Dr. Somlo's NPI, 1538144035, was assigned on December 7, 2005. Dr. Somlo graduated from Columbia University Vagelos College of Physicians and Surgeons in 1984. Dr. Somlo holds Connecticut license 028167.
- NPI
- 1538144035NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537292669
- NPI enumeration date
- December 7, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 688-5900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Stefan Somlo practices at Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut
Dr. Somlo's primary practice is Yale New Haven Psychiatric Hospital (York St), at 20 York Street, New Haven, CT 06510. The practice phone is (203) 688-5900.
- Yale New Haven Psychiatric Hospital (York St)20 York Street, New Haven, CT 06510Phone(203) 688-5900
Source: Dmand AI Affiliation Data
Dr. Stefan Somlo is affiliated with 2 sites of care and 1 medical group
Dr. Somlo's primary practice is Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut. Dr. Somlo is also affiliated with Yale New Haven Hospital. The medical group on file is Yale Health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Stefan Somlo's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Somlo practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Yale New Haven Psychiatric Hospital (York St) | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Stefan Somlo is one of 141 nephrologists in Connecticut
Nephrology is Dr. Somlo's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Somlo is licensed in Connecticut.
Specialties and state licenses
- Nephrology, ConnecticutPrimary
Nephrologists near Dr. Somlo
Counts of nephrologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Stefan Somlo billed Medicare for 45 services in 2023
CMS data shows 45 Medicare services from Dr. Somlo across 2 procedure codes in 2023. Medicare paid $3,819 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Somlo's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 392023: 4515%
Dr. Somlo compared with the Connecticut median for nephrologists, 2023
- Dr. Somlo
- Connecticut median
- Medicare services
- 45vs 73294% below
Medians across 137 nephrologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Somlo's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Somlo and other nephrologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Stefan Somlo's patients have a median age of 68
Across all payers, Dmand AI patient panel data puts Dr. Somlo's median patient age at 68, with 75% women.
Dr. Somlo's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women75%
- Men25%
Source: Dmand AI Patient Panel Data
Dr. Stefan Somlo scored 87 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 87 out of 100 for Dr. Somlo for performance year 2024, reported as part of a group. Dr. Somlo accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Somlo's MIPS scores, performance year 2024
- 87of 100Final score
- 77.4of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 74of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Stefan Somlo received $111,833 in industry payments from 2018 to 2025
CMS Open Payments shows 43 general payments to Dr. Somlo from 6 drug and device companies from 2018 to 2025. Consulting fees make up the largest share, 79% of the total. Vertex Pharmaceuticals Incorporated paid the most, $76,605.
General payments to Dr. Somlo by program year, 2018 to 2025
General payments to Dr. Somlo by kind, 2018 to 2025
- Consulting fees$88,61579%
- Travel and lodging$12,16511%
- Speaker and faculty fees$11,00010%
- Food and beverage$530%
Companies that paid Dr. Somlo the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Stefan Somlo graduated from Columbia University Vagelos College of Physicians and Surgeons
Dr. Somlo graduated from Columbia University Vagelos College of Physicians and Surgeons in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Stefan Somlo's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Stefan Somlo
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Stefan Somlo's NPI number?
Dr. Stefan Somlo's NPI number is 1538144035. It was assigned on December 7, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Stefan Somlo?
Dr. Stefan Somlo is a nephrologist in New Haven, Connecticut. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Stefan Somlo practice?
Dr. Somlo practices at 20 York Street, New Haven, CT 06510. Dr. Somlo's primary practice is Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut.
What is Dr. Stefan Somlo's office phone number?
The practice phone on file for Dr. Somlo is (203) 688-5900.
What is Dr. Stefan Somlo's medical license number?
Dr. Somlo holds Connecticut license 028167.
Which hospitals is Dr. Stefan Somlo affiliated with?
Dr. Somlo is affiliated with Yale New Haven Hospital.
What medical group is Dr. Stefan Somlo part of?
Dr. Somlo is linked to Yale Health.
Does Dr. Stefan Somlo accept Medicare?
Yes. CMS data shows Dr. Somlo billed Medicare for 45 services in 2023, and Dr. Somlo accepts Medicare assignment.
What is Dr. Stefan Somlo's MIPS score?
Dr. Somlo's MIPS final score for performance year 2024 is 87 out of 100, reported as part of a group.
What services does Dr. Stefan Somlo bill to Medicare?
In 2023, Dr. Somlo's most billed Medicare services were hospital inpatient care (99233) and hospital inpatient care (99232).
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Where did Dr. Stefan Somlo go to medical school?
Dr. Somlo graduated from Columbia University Vagelos College of Physicians and Surgeons in 1984.
Has Dr. Stefan Somlo received payments from drug or device companies?
CMS Open Payments shows $111,833 in general payments to Dr. Somlo from 6 companies from 2018 to 2025. The largest total came from Vertex Pharmaceuticals Incorporated.
How long has Dr. Stefan Somlo been practicing?
Dr. Somlo graduated from medical school in 1984, 42 years ago.
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