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JEFFREY S ALEXANDER MD PA
NPI 1447432398
Internal Medicine in Towson, MD

Active since December 03, 2007CLIA 21D1044489 · Waiver
120 SISTER PIERRE DR, SUITE 101, TOWSON, MD 21204(443) 901-0301(443) 901-0305 Get Directions Write a Review

NPPES record last updated: December 3, 2007. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Jeffrey S Alexander Md Pa NPPES

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

JEFFREY S ALEXANDER MD PA (NPI 1447432398) is a healthcare organization registered as an internal medicine in Towson, Maryland and active in the NPI registry since December 2007. The organization holds a CLIA Waiver certificate valid through August 21, 2027 and lists Jeffrey Steven Alexander, Owner, as its authorized official.

NPPES Registry Identity

NPI1447432398
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameJEFFREY S ALEXANDER MD PA
Location Address120 SISTER PIERRE DR, SUITE 101Towson, MD 21204-7516
Mailing Address2702 Pemberton RdgBaldwin, MD 21013-9530 · (410) 557-8873 · Fax (410) 557-8873
Phone(443) 901-0301
Fax(443) 901-0305
Organization SubpartNo
Authorized OfficialJeffrey Steven AlexanderOwner · (443) 901-0301
Enumeration DateDecember 3, 2007
✔ NPI 1447432398 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MD · 044560
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.
120 SISTER PIERRE DR, Towson, MD 21204
Open in Google Maps ↗

Other Identifiers 1

Medicare PIN664M

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 21D1044489

Jeffrey S Alexander MD PA · Towson, MD
Active · expires Aug 21, 2027
CLIA Number21D1044489
Laboratory TypePhysician Office
Certificate Effective DateAugust 22, 2025
Certificate Expiration DateAugust 21, 2027
Laboratory DirectorJeffrey S. Alexander
Laboratory Phone(443) 901-0301
Laboratory LocationJeffrey S Alexander MD PA120 Sister Pierre Drive Ste 101, Towson, MD 21204
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

PSYCH ASSOCIATES CARE, LLC
Psychologist (Counseling)
120 SISTER PIERRE DR, SUITE 407
TOWSON, MD 21204
Baltimore County (443) 279-2000
MRS. SUSAN KATHLEEN POWER LCSW-C
Social Worker (Clinical)
120 SISTER PIERRE DR, SUITE 407
TOWSON, MD 21204
Baltimore County (443) 279-2000
MICHAEL O. MAGAN MD PA
Obstetrics & Gynecology (Gynecology)
120 SISTER PIERRE DR, SUITE 303
TOWSON, MD 21204
Baltimore County (410) 337-9003
WILLIAM CAREY WIMMER M.D.
Psychiatry & Neurology (Psychiatry)
120 SISTER PIERRE DR, 307
TOWSON, MD 21204
Baltimore County (410) 821-7155
JAMES R. KLIMA
Social Worker (Clinical)
120 SISTER PIERRE DR, SUITE 407
TOWSON, MD 21204
Baltimore County (443) 279-2000
JACOB TENDLER, M.D., P.A.
Psychiatry & Neurology (Pain Medicine)
120 SISTER PIERRE DR, SUITE 501
TOWSON, MD 21204
Baltimore County (410) 337-6800
DR. LOIS E NIELSEN MD
Internal Medicine
120 SISTER PIERRE DR, SUITE # 206
TOWSON, MD 21204
Baltimore County (410) 296-3650
ARTHUR MACNEILL HORTON EDD MED DPD
Clinical Neuropsychologist
120 SISTER PIERRE DR, 403
TOWSON, MD 21204
Baltimore County (410) 823-6408

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 Jeffrey S Alexander MD PA's NPI number?

The NPI number for Jeffrey S Alexander MD PA is 1447432398. It was assigned to this organization in the NPPES registry on December 3, 2007.

Where is Jeffrey S Alexander MD PA located?

Jeffrey S Alexander MD PA is located at 120 Sister Pierre Dr Suite 101, Towson, MD 21204. The listed phone number is (443) 901-0301.

What is Jeffrey S Alexander MD PA's specialty?

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

Does Jeffrey S Alexander MD PA hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 21D1044489) is associated with this NPI, valid through August 21, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Jeffrey S Alexander MD PA was last updated on December 3, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.