ALAN M NELSON (M.D.) – Internal Medicine Physician, NPI 1720006117

ALAN M NELSON (M.D.) is a healthcare provider. based in Bridgeport, Connecticut. specializing in Internal Medicine Physician. They hold the professional credentials M.D.. They hold a License No. 019537 (CT). The NPI Number for ALAN M NELSON (M.D.) is 1720006117

Main info

Male
52 Years Of Experience
Accepts Medicare Assignment
Name
ALAN M NELSON (M.D.)
NPI
1720006117
Phone
(203) 374-4966
Address
4641 MAIN ST STE 1
Enumeration Date
17 July 2006
Last Update Date
6 December 2022

Doctor Profile

Medical School Name
GEORGETOWN UNIVERSITY SCHOOL OF MEDICINE
Secondary Phone
2032929000
Graduation Year
1974 (52 years ago)
PAC ID
7517931850
Group Practice PAC ID
3274506290
Professional Enrollment ID
I20070226000740
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience67
Completeness75
Years active:19State licenses:1Digital endpointsOther names

Provider Addresses for ALAN M NELSON (M.D.)

  • 4641 MAIN ST STE 1

    BRIDGEPORT, CT 066061827

    Phone: (203) 374-4966

    Fax: (203) 371-7024

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 98 Open Payments records for all available years, with a total value of $2,677.

Total Amount is formed as General ($2,677) + Research ($0) + Ownership ($0) = $2,677.

Last reported payment date: 2024-12-09 • Largest payer in this snapshot: Janssen Biotech, Inc. ($325).

Total Amount

$2,677

General + Research + Ownership

Payments

98

Total payment records

General Amount

$2,677

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-12-09

Latest reported date

View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2007-02-26

PECOS data refreshed: 2026-06-15

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20070226000740IGastroenterologyCTTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
J1745Injection, infliximab, excludes biosimilar, 10 mg1,45011$0
99214Established patient office or other outpatient visit, 30-39 minutes285130$0
J7050Infusion, normal saline solution, 250 cc8731$0
96365Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less6121$0
99215Established patient office or other outpatient visit, 40-54 minutes5548$0
View full utilization report →

Insurance plans in this area (ZIP 06606)

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Provider's Procedures

ALAN M NELSON (M.D.) performs procedures in Internal Medicine Physician. See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
GASTROENTEROLOGYCT45378Diagnostic examination of large bowel using an endoscope2423
GASTROENTEROLOGYCT81002Urinalysis, manual test2828

Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 3274506290View full group profile

Reviews

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Frequently asked questions

How do I look up ALAN M NELSON (M.D.) by NPI?
Use NPI 1720006117 when you need to reference ALAN M NELSON (M.D.) in forms, claims, or directories.
Is ALAN M NELSON (M.D.)'s NPI currently valid?
The extract we use shows ALAN M NELSON (M.D.) as active.
Does ALAN M NELSON (M.D.) list a primary specialty?
If you are matching referrals, note Internal Medicine Physician for ALAN M NELSON (M.D.). Clinical services aligned with this taxonomy classification.
What location metadata exists for ALAN M NELSON (M.D.)?
The page summarizes Bridgeport, Connecticut for ALAN M NELSON (M.D.); expand the address list for detail.
Does Medicare enrollment show here?
Medicare enrollment screens are separate from the basic NPI extract shown here.

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