GLEN A. COOK JR. M.D.
NPI 1740418045
Psychiatry & Neurology - Clinical Neurophysiology in Bethesda, MD

Q: What is Glen Cook's NPI number?

The NPI number for Glen Cook is 1740418045. It was assigned to this individual provider in the NPPES registry on June 24, 2009.

Q: What is Glen Cook's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Clinical Neurophysiology, with taxonomy code 2084N0600X.

Q: When was this NPI record last updated?

The NPPES record for Glen Cook was last updated on October 31, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.

Active since June 24, 2009PECOS Enrolled

8901 WISCONSIN AVE, BETHESDA, MD 20889(301) 295-4771(301) 295-4759 Get Directions Write a Review

NPPES record last updated: October 31, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Oct 31, 2023, Mar 29, 2021, Nov 11, 2019 (3 updates tracked since 2019).

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About Glen A. Cook Jr. M.d. NPPES

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

GLEN A. COOK JR. M.D. (NPI 1740418045) is an individual clinical neurophysiology provider in Bethesda, Maryland, licensed in Virginia (0101248020) and active in the NPI registry since June 2009. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1740418045

Entity TypeIndividualMale

Primary Taxonomy2084N0600X

Provider Legal NameGLEN A. COOK JR.Credential: M.D.

Location Address8901 WISCONSIN AVEBethesda, MD 20889

Mailing Address8901 Wisconsin AveBethesda, MD 20889-0004 · (301) 295-4771 · Fax (301) 295-4759

Phone(301) 295-4771

Fax(301) 295-4759

Sole ProprietorNo

Enumeration DateJune 24, 2009

Last NPPES UpdateOctober 31, 20233 updates tracked since enumeration

NPPES CertifiedOctober 31, 2023

✔ NPI 1740418045 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · Clinical NeurophysiologyAllopathic & Osteopathic Physicians

Taxonomy Code2084N0600X

License✔ Licensed in VA · 0101248020

Definition

Clinical Neurophysiology is a subspecialty with psychiatric or neurologic expertise in the diagnosis and management of central, peripheral, and autonomic nervous system disorders using combined clinical evaluation and electrophysiologic testing such as electroencephalography (EEG), electromyography (EMG), and nerve conduction studies (NCS).

Also ListedPsychiatry & Neurology · NeurologyTaxonomy 2084N0400X · License 0101248020 (VA)

8901 WISCONSIN AVE, Bethesda, MD 20889

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Glen A. Cook Jr. M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Glen Cook reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Winchester Medical Center

56 mi

Family Medicine

217 GROCERY AVENUE, SUITE B
Winchester, VA 22602

Reassigned Medicare billing, Virginia enrollment
756 clinicians in this Medicare group

NPI 1689463671 (540) 536-7700

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

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.

DR. TAMMERA NELSON

Pharmacist

8901 WISCONSIN AVE
BETHESDA, MD 20889

Montgomery County (301) 295-4497

DAWOOD TAFTI M.D.

Radiology (Diagnostic Radiology)

8901 WISCONSIN AVE
BETHESDA, MD 20889

Montgomery County (301) 319-8373

DR. ASHLEY BEE BOZZAY

Student in an Organized Health Care Education/Training Program

8901 WISCONSIN AVE
BETHESDA, MD 20889

Montgomery County (301) 295-8588

DR. ADAM JOSEPH MAIER DO

Internal Medicine (Infectious Disease)

8901 WISCONSIN AVE
BETHESDA, MD 20889

Montgomery County (301) 295-4000

SIMAL RUHISHTA ALI DO

General Practice

8901 WISCONSIN AVE
BETHESDA, MD 20889

Montgomery County (301) 295-4900

DR. JACOB L FRIESEN M.D.

Psychiatry & Neurology (Psychiatry)

8901 WISCONSIN AVE, WRNMMC, NICOE, BUILDING 51
BETHESDA, MD 20889

Montgomery County (301) 319-3772

MS. CARLA PATRICE ALEXIS P.T.

Physical Therapist

8901 WISCONSIN AVE
BETHESDA, MD 20889

Montgomery County (301) 295-4880

DR. ANN TALBOT SCHWARTZ MD

Pediatrics

8901 WISCONSIN AVE
BETHESDA, MD 20889

Montgomery County (301) 295-4941

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 Glen Cook's NPI number?

The NPI number for Glen Cook is 1740418045. It was assigned to this individual provider in the NPPES registry on June 24, 2009.

Where is Glen Cook located?

Glen Cook practices at 8901 Wisconsin Ave, Bethesda, MD 20889. The listed phone number is (301) 295-4771.

What is Glen Cook's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Clinical Neurophysiology, with taxonomy code 2084N0600X.

Is Glen Cook enrolled in Medicare?

Yes. Glen Cook is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Glen Cook's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Glen Cook reassigns Medicare benefits to Winchester Medical Center (Winchester, VA). The 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 Glen Cook's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Glen Cook accept?

Health plans from CareSource list Glen Cook as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Glen Cook was last updated on October 31, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.