Physician Profile
Unclaimed ProfileAbout EISEN
Thomas D Eisen, MD practices nephrology in New Haven, CT. Thomas is a 1983 graduate of New York University Medical College - Nlg. According to Medicare claims data, Thomas cared for 354 Medicare patients across 741 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What does Dr. Eisen specialize in?
Dr. Eisen is a nephrology in New Haven, CT. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “NEPHROLOGY”.
NPI registry
Where is Dr. Eisen located?
Dr. Eisen is listed at 136 SHERMAN AVE SUITE 405, New Haven, CT 06511. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Eisen's phone number?
The number on file is (203) 787-0117. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Eisen's NPI number?
Dr. Eisen's National Provider Identifier is 1427044684. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Eisen go to medical school?
Dr. Eisen attended New York University Medical College - Nlg, graduating in 1983. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Eisen been practicing?
Dr. Eisen has 43 years experience. Calculated from a graduation year of 1983, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Eisen do most often?
According to Medicare billing data, Dr. Eisen provides treatments such as hemodialysis procedure with physician evaluation and dialysis services, 4 or more physician visits per month, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Eisen confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Eisen. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (203) 787-0117
- Email not available
Practice Locations
136 SHERMAN AVE SUITE 405
New Haven, CT 06511
Procedures Most Often Billed to Medicare
741 services · 354 patients · 9 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Hemodialysis procedure with physician evaluation | Treatment | 90935 |
83 |
| Dialysis services, 4 or more physician visits per month (20 years or older) | Treatment | 90960 |
80 |
| Dialysis services, 2-3 physician visits per month (20 years or older) | Treatment | 90961 |
22 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
278 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
162 |
| Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | Office visit | 99221 |
47 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
37 |
| Telephone medical discussion with physician, 21-30 minutes | Office visit | 99443 |
20 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
12 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other nephrology specialists at this location 5
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other nephrology specialists in New Haven 8
Same specialty, same city.
More connections — 16 related providers in 3 groups
Trained at New York University Medical College - Nlg 3
Other providers in the same specialty who trained at the same institution.
Class of 1983 at New York University Medical College - Nlg 5
Providers who graduated from the same medical school in the same year.
Also performs Hemodialysis procedure with physician evaluation 8
Providers in CT who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.