Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DRS BIONDO & SIM PA
NPI 1841479938
Internal Medicine in Havre De Grace, MD

Active since October 25, 2007
251 LEWIS LANE, SUITE 201, HAVRE DE GRACE, MD 21078(410) 939-4477(410) 939-1153 Get Directions Write a Review

NPPES record last updated: September 21, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Drs Biondo & Sim Pa NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DRS BIONDO & SIM PA (NPI 1841479938), doing business as Union Medical Clinic Pa, is a healthcare organization registered as an internal medicine in Havre De Grace, Maryland and active in the NPI registry since October 2007. The organization lists Thomas Biondo, Owner410939, as its authorized official.

NPPES Registry Identity

NPI1841479938
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameDRS BIONDO & SIM PA
Location Address251 LEWIS LANE, SUITE 201Havre De Grace, MD 21078-3753
Mailing Address251 Lewis Ln Ste 201Havre De Grace, MD 21078-3753 · (410) 939-4477 · Fax (410) 939-1153
Fax(410) 939-1153
Organization SubpartNo
Authorized OfficialThomas BiondoOwner410939 · (410) 939-4477
Enumeration DateOctober 25, 2007
Last NPPES UpdateSeptember 21, 2026
NPPES CertifiedSeptember 21, 2026
✔ NPI 1841479938 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
251 LEWIS LANE, Havre De Grace, MD 21078

Other Names 1

Doing Business AsUnion Medical Clinic Pa

Other Identifiers 9

Other000424675PA · Bs Of Pa
Other145388000MD · Workmens Compensation Department Of Labor
Medicaid148241600MD
Medicaid408544200MD
Medicaid348561700MD
OtherW724001MD · Delmarva Health Plan
OtherK781UNMD · Blue Shield Of Maryland
Medicaid982961000MD
OtherW724001DC · Blue Shield Dc

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Drs Biondo & Sim Pa is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

5

Medicare enrollment records show 5 clinicians reassign Medicare billing to Drs Biondo & Sim PA, which bills Medicare for the services they deliver. Of these, 3 practice at this address and 4 within 10 miles. They are listed nearest first.

Clinicians, nearest first (5)

Internal Medicine
NPI 1649229519
251 LEWIS LANE SUITE 201
Havre De Grace, MD 21078
(410) 939-4477
✔ PECOS✔ Accepts MedicareSame address
Internal Medicine
NPI 1659320505
251 LEWIS LANE SUITE 201
Havre De Grace, MD 21078
(410) 939-4477
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1376389122
251 LEWIS LN STE 201
Havre De Grace, MD 21078
(410) 939-4477
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1700343191
652 LIBERTY GROVE RD
Conowingo, MD 21918
(443) 553-2113
✔ PECOS✔ Accepts Medicare6.3 mi
Nurse Practitioner
NPI 1881186864
8403 COLESVILLE RD STE 1100
Silver Spring, MD 20910
(443) 383-9300
✔ PECOS✔ Accepts Medicare63 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Drs Biondo & Sim PA's NPI number?

The NPI number for Drs Biondo & Sim PA is 1841479938. It was assigned to this organization in the NPPES registry on October 25, 2007. The provider is doing business as Union Medical Clinic PA.

Where is Drs Biondo & Sim PA located?

Drs Biondo & Sim PA is located at 251 Lewis Lane Suite 201, Havre De Grace, MD 21078. The listed phone number is (410) 939-4477.

What is Drs Biondo & Sim PA's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Drs Biondo & Sim PA enrolled in Medicare?

Yes. Drs Biondo & Sim PA is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Drs Biondo & Sim PA?

According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians in 2 Medicare specialties reassign their Medicare billing to Drs Biondo & Sim PA. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (3) and Internal Medicine (2). Of these, 3 practice at this address and 4 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Drs Biondo & Sim PA was last updated on September 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 46 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.