Unknown Individual – Internal Medicine Physician, NPI 1598781510

Unknown Individual is a healthcare provider. based in Lowell, Massachusetts. specializing in Internal Medicine Physician. They hold a License No. 57919 (MA). The NPI Number for Unknown Individual is 1598781510

Main info

Organization
Inactive
43 Years Of Experience
Accepts Medicare Assignment
Name
Unknown Individual
NPI
1598781510
Phone
(978) 970-1607
Address
45 PALMER ST
Deactivation Date
9 December 2021

Doctor Profile

Medical School Name
UNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL
Secondary Phone
9789701607
Graduation Year
1983 (43 years ago)
PAC ID
5597703082
Group Practice PAC ID
3577507797
Professional Enrollment ID
I20050425000825
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience14
Completeness75
Years active:0State licenses:1Digital endpointsOther names

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Provider Addresses for Unknown Individual

  • 45, Palmer Street, The Acre, Lowell, Middlesex County, Massachusetts, 01852, United States

    LOWELL, MA 018521834

    Phone: (978) 970-1607

    Fax: (978) 970-1115

    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)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

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

No Medicare enrollment or revalidation data available for this provider in our database.

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.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 01852)

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Provider's Procedures

Unknown Individual performs procedures in Internal Medicine Physician. See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
INTERNAL MEDICINEMA90670Pneumococcal vaccine for injection into muscle8585

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: 3577507797View full group profile
NameSpecialtyState
Physician AssistantMA
Physician AssistantMA
Nurse PractitionerMA
-MA
Physician AssistantMA
-MA
Nurse PractitionerMA
Nephrology, Internal MedicineMA
Physician AssistantMA
Physician AssistantMA

Reviews

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Frequently asked questions

Is Unknown Individual listed with a National Provider Identifier?
Yes — Unknown Individual has NPI 1598781510 on file in the registry.
Is Unknown Individual still active if the NPI shows inactive?
NPPES shows Unknown Individual as inactive; dates on the record explain the timeline when available.
What clinical focus is listed for Unknown Individual?
At a glance, Unknown Individual is tied to Internal Medicine Physician. Clinical services aligned with this taxonomy classification.
Is Unknown Individual located near Lowell?
Unknown Individual currently maps to Lowell, Massachusetts in this extract.
Does inactive status remove historical data?
Historical rows can remain visible after status changes — read the dates carefully.

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