Dr. Thomas D. Eisen, MD
- Medicare services, 2024
- 741
- Medicare patients, 2024
- 237
- Part D claims, 2024
- 817
- MIPS score, 2024
- 100
- Hospital affiliations
- 2
- Practice address
- 136 Sherman Ave, New Haven, CT 06511
- Practice phone
- Call (203) 787-0117
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Metabolism Associates
New Haven, Connecticut
Find Dr. Eisen's professional email, personal email and mobile number
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Dr. Thomas D. Eisen is a nephrologist in New Haven, Connecticut
Dr. Eisen practices at Metabolism Associates in New Haven, Connecticut.
Dr. Eisen's NPI, 1427044684, was assigned on September 23, 2005. Dr. Eisen graduated from New York University Medical College - Nlg in 1983. Dr. Eisen holds Connecticut license 28182.
- NPI
- 1427044684NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6305900713
- NPI enumeration date
- September 23, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (203) 787-0117
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas D. Eisen practices at Metabolism Associates in New Haven, Connecticut
Dr. Eisen's primary practice is Metabolism Associates, at 136 Sherman Ave, New Haven, CT 06511 in South Central Ct County. The practice phone is (203) 787-0117.
- Metabolism Associates136 Sherman Ave, New Haven, CT 06511 · South Central Ct CountyPhone(203) 787-0117
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Thomas D. Eisen is affiliated with 8 sites of care and 2 medical groups
Dr. Eisen's primary practice is Metabolism Associates in New Haven, Connecticut. Dr. Eisen is also affiliated with Yale New Haven Hospital. The medical group on file is Metabolism Associates. Dmand AI also links Dr. Eisen to 1 more hospital, 3 dialysis centers, 2 group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Thomas D. Eisen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Eisen practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Metabolism Associates | Available with a free account |
| +7 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thomas D. Eisen is one of 141 nephrologists in Connecticut
Nephrology is Dr. Eisen's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Eisen is licensed in Connecticut.
Specialties and state licenses
- Nephrology, ConnecticutPrimary
Nephrologists near Dr. Eisen
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. Thomas D. Eisen billed Medicare for 741 services in 2024
CMS data shows 741 Medicare services from Dr. Eisen across 9 procedure codes in 2024, for 237 Medicare patients. Medicare paid $77,028 for them.
Dr. Eisen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5132024: 5568%
- Tests and treatments
- 2023: 2872024: 18536%
Where Dr. Eisen's Medicare services took place, 2024
- In an office33345%
- In a facility40855%
Dr. Eisen compared with the Connecticut median for nephrologists, 2024
- Dr. Eisen
- Connecticut median
- Medicare services
- 741vs 732Close to median
- Medicare patients
- 237vs 2619% below
- Part D claims
- 623vs 600Close to median
Medians across 137 nephrologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Eisen's most billed Medicare procedure codes, 2024
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. Eisen and other nephrologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas D. Eisen treated 237 Medicare patients in 2024, average age 71
CMS counts 237 Medicare patients who saw Dr. Eisen in 2024. The largest group is 65 to 74, with 75 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 39% are also on Medicaid. Their average risk score is 4.70, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Eisen's median patient age at 71, with 38% women.
Dr. Eisen's Medicare patients by age, 2024
Dr. Eisen's Medicare patients by sex, 2024
- Women9239%
- Men14561%
Chronic conditions among Dr. Eisen's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes61%
- Heart failure52%
- Ischemic heart disease49%
- Arthritis43%
- Mood disorders41%
Share of Medicare patients with each condition. A patient can have several.
Dr. Eisen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women38%
- Men61%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Thomas D. Eisen wrote 817 Medicare Part D claims in 2024
In 2024, Dr. Eisen wrote 817 Medicare Part D claims for 155 patients. 89% of them were for generic drugs. CMS names the drug for 623 of them, across 22 drugs with 11 or more claims each, at $99,385 in total drug cost. In 2023, CMS named 551 claims across 19 drugs.
Dr. Eisen's Part D claims by kind of drug, 2024
- Generic729 claims89%
- Brand-name and other88 claims11%
Dr. Eisen's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Eisen's Part D claims, 2024
- Antibiotics2%19 of 817 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5512024: 62313%
Drugs named by CMS: 22 in 2024, 19 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Thomas D. Eisen scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Eisen for performance year 2024, reported as part of a group. Dr. Eisen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Eisen as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Eisen's MIPS scores, performance year 2024
- 100of 100Final score
- 100of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 73of 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. Thomas D. Eisen received $10,718 in industry payments from 2016 to 2025
CMS Open Payments shows 509 general payments to Dr. Eisen from 39 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Relypsa, Inc. paid the most, $1,607.
General payments to Dr. Eisen by program year, 2016 to 2025
General payments to Dr. Eisen by kind, 2016 to 2025
- Food and beverage$10,63699%
- Education$831%
Companies that paid Dr. Eisen the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas D. Eisen graduated from New York University Medical College - Nlg
Dr. Eisen graduated from New York University Medical College - Nlg in 1983.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Thomas D. Eisen'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| 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. Thomas D. Eisen
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. Thomas D. Eisen's NPI number?
Dr. Thomas D. Eisen's NPI number is 1427044684. It was assigned on September 23, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas D. Eisen?
Dr. Thomas D. Eisen is a nephrologist in New Haven, Connecticut. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Thomas D. Eisen practice?
Dr. Eisen practices at 136 Sherman Ave, New Haven, CT 06511. Dr. Eisen's primary practice is Metabolism Associates in New Haven, Connecticut. Dmand AI also links Dr. Eisen to 1 hospital, 3 dialysis centers, 2 group practices and clinics and 1 medical group.
What is Dr. Thomas D. Eisen's office phone number?
The practice phone on file for Dr. Eisen is (203) 787-0117.
What is Dr. Thomas D. Eisen's medical license number?
Dr. Eisen holds Connecticut license 28182.
Which hospitals is Dr. Thomas D. Eisen affiliated with?
Dr. Eisen is affiliated with Yale New Haven Hospital. Dmand AI links Dr. Eisen to 1 more hospital.
What medical group is Dr. Thomas D. Eisen part of?
Dr. Eisen is linked to Metabolism Associates. Dmand AI links Dr. Eisen to 1 more medical group.
Does Dr. Thomas D. Eisen accept Medicare?
Yes. CMS data shows Dr. Eisen billed Medicare for 741 services in 2024, and Dr. Eisen accepts Medicare assignment.
Does Dr. Thomas D. Eisen offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Eisen as offering telehealth services.
What is Dr. Thomas D. Eisen's MIPS score?
Dr. Eisen's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
Show 6 more questionsShow fewer questions
How many Medicare patients does Dr. Thomas D. Eisen see?
CMS counts 237 Medicare patients who saw Dr. Eisen in 2024, with an average age of 71.
What services does Dr. Thomas D. Eisen bill to Medicare?
In 2024, Dr. Eisen's most billed Medicare services were hospital inpatient care (99232), office visit, established patient (99214) and dialysis (90935).
Where did Dr. Thomas D. Eisen go to medical school?
Dr. Eisen graduated from New York University Medical College - Nlg in 1983.
What drugs does Dr. Thomas D. Eisen prescribe most?
In 2024 Medicare Part D data, Dr. Eisen's most prescribed drugs by claims were Losartan Potassium, Amlodipine Besylate and Furosemide.
Has Dr. Thomas D. Eisen received payments from drug or device companies?
CMS Open Payments shows $10,718 in general payments to Dr. Eisen from 39 companies from 2016 to 2025. The largest total came from Relypsa, Inc.
How long has Dr. Thomas D. Eisen been practicing?
Dr. Eisen graduated from medical school in 1983, 43 years ago.
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