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DR. NATHAN ALAN SHARER PSY.D.
NPI 1457740508
Psychologist - Clinical in Baltimore, MD

Active since January 13, 2015Opted out of Medicare · through Sep 5, 2027
5730 COTTONWORTH AVE UNIT 10402, BALTIMORE, MD 21209(443) 687-9271 Get Directions Write a Review

NPPES record last updated: March 25, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Mar 25, 2026, Oct 23, 2022, May 26, 2022 (3 updates tracked since 2022).

About Dr. Nathan Alan Sharer Psy.d. NPPES

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

DR. NATHAN ALAN SHARER PSY.D. (NPI 1457740508) is an individual clinical provider in Baltimore, Maryland, licensed in Maryland (05464) and active in the NPI registry since January 2015. He has opted out of Medicare through September 5, 2027.

NPPES Registry Identity

NPI1457740508
Entity TypeIndividualMale
Primary Taxonomy103TC0700X
Provider Legal NameDR. NATHAN ALAN SHARERCredential: PSY.D.
Location Address5730 COTTONWORTH AVE UNIT 10402Baltimore, MD 21209-7506
Mailing Address5730 Cottonworth Ave Unit 10402Baltimore, MD 21209-7506 · (443) 687-9271
Phone(443) 687-9271
Sole ProprietorYes
Enumeration DateJanuary 13, 2015
Last NPPES UpdateMarch 25, 20263 updates tracked since enumeration
NPPES CertifiedMarch 25, 2026
✔ NPI 1457740508 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in MD · 05464
Definition
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.
5730 COTTONWORTH AVE UNIT 10402, Baltimore, MD 21209
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Nathan Alan Sharer Psy.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from September 5, 2025 through September 5, 2027.

Opt-Out Effective DateSeptember 5, 2025
Opt-Out In Effect ThroughSeptember 5, 2027Opt-out affidavits renew automatically every two years unless cancelled

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 Nathan Sharer's NPI number?

The NPI number for Nathan Sharer is 1457740508. It was assigned to this individual provider in the NPPES registry on January 13, 2015.

Where is Nathan Sharer located?

Nathan Sharer practices at 5730 Cottonworth Ave Unit 10402, Baltimore, MD 21209. The listed phone number is (443) 687-9271.

What is Nathan Sharer's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Nathan Sharer enrolled in Medicare?

No. Nathan Sharer has opted out of Medicare through September 5, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Nathan Sharer was last updated on March 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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.