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ALLEGENY MEDICAL LLC
NPI 1821370644
Internal Medicine in Hagerstown, MD

Active since September 19, 2011
324 EAST ANTIETAM STR., SUITE 305, HAGERSTOWN, MD 21740(301) 791-2510(301) 739-7798 Get Directions Write a Review

NPPES record last updated: June 25, 2013. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Allegeny Medical Llc NPPES

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

ALLEGENY MEDICAL LLC (NPI 1821370644) is a healthcare organization registered as an internal medicine in Hagerstown, Maryland and active in the NPI registry since September 2011. The organization lists Shahab Z. Siddiqui, Md/owner, as its authorized official.

NPPES Registry Identity

NPI1821370644
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameALLEGENY MEDICAL LLC
Location Address324 EAST ANTIETAM STR., SUITE 305Hagerstown, MD 21740-5768
Mailing Address324 East Antietam St., Suite 305Hagerstown, MD 21740-5768 · (301) 791-2510 · Fax (301) 739-7798
Phone(301) 791-2510
Fax(301) 739-7798
Organization SubpartNo
Authorized OfficialShahab Z. SiddiquiMd/owner · (301) 791-2510
Enumeration DateSeptember 19, 2011
Last NPPES UpdateJune 25, 2013
✔ NPI 1821370644 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 5

★ 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.
Also ListedFamily MedicineTaxonomy 207Q00000X
Also ListedClinic/Center · Primary CareTaxonomy 261QP2300X · License D0072433 (MD)
Also ListedLong Term Care HospitalTaxonomy 282E00000X · License D0072433 (MD)
Also ListedGeneral Acute Care Hospital · RuralTaxonomy 282NR1301X · License D0072433 (MD)
324 EAST ANTIETAM STR., Hagerstown, MD 21740
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Allegeny Medical Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

4

Medicare enrollment records show 4 clinicians reassign Medicare billing to Allegeny Medical LLC, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 3 within 10 miles. They are listed nearest first.

Clinicians, nearest first (4)

Noor Siddiqui, M.D.
Family Practice
NPI 1104098540
324 E ANTIETAM ST SUITE 305
Hagerstown, MD 21740
(301) 791-2510
✔ PECOS✔ Accepts MedicareSame address
Shahab Siddiqui, MD
Internal Medicine
NPI 1962448902
324 E ANTIETAM ST STE 305
Hagerstown, MD 21740
(301) 791-2510
✔ PECOS✔ Accepts MedicareSame address
Cristina Butler-Lugo, CRNP
Nurse Practitioner
NPI 1033865266
11110 MEDICAL CAMPUS RD STE 143
Hagerstown, MD 21742
(301) 714-4350
✔ PECOS✔ Accepts Medicare2.0 mi
Guiselly Erazo-Romero
Nurse Practitioner
NPI 1528551223
4180 W 11 MILE RD
Novi, MI 48375
(240) 469-9972
✔ PECOS348 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 Allegeny Medical LLC's NPI number?

The NPI number for Allegeny Medical LLC is 1821370644. It was assigned to this organization in the NPPES registry on September 19, 2011.

Where is Allegeny Medical LLC located?

Allegeny Medical LLC is located at 324 East Antietam Str. Suite 305, Hagerstown, MD 21740. The listed phone number is (301) 791-2510.

What is Allegeny Medical LLC's specialty?

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

Is Allegeny Medical LLC enrolled in Medicare?

Yes. Allegeny Medical LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Allegeny Medical LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians reassign their Medicare billing to Allegeny Medical LLC, in Family Practice, Internal Medicine and Nurse Practitioner. 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. Of these, 2 practice at this address and 3 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 Allegeny Medical LLC was last updated on June 25, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years 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.