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TIARNAN KEENAN
NPI 1801618186
Ophthalmology - Retina Specialist in Bethesda, MD

Active since October 29, 2024PECOS Enrolled
9000 ROCKVILLE PIKE, BETHESDA, MD 20892(301) 451-6330 Get Directions Write a Review

NPPES record last updated: October 29, 2024. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Tiarnan Keenan NPPES

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

TIARNAN KEENAN (NPI 1801618186) is an individual retina specialist in Bethesda, Maryland, licensed in Maine (MD22678) and active in the NPI registry since October 2024. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1801618186
Entity TypeIndividualMale
Primary Taxonomy207WX0107X
Provider Legal NameTIARNAN KEENAN
Location Address9000 ROCKVILLE PIKEBethesda, MD 20892
Mailing Address9719 Singleton Dr.Bethesda, MD 20817
Phone(301) 451-6330
Sole ProprietorNo
Enumeration DateOctober 29, 2024
NPPES CertifiedOctober 22, 2024
✔ NPI 1801618186 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmology · Retina SpecialistAllopathic & Osteopathic Physicians
Taxonomy Code207WX0107X
License✔ Licensed in ME · MD22678
Definition
An ophthalmologist who specializes in the diagnosis and treatment of vitreoretinal diseases.
9000 ROCKVILLE PIKE, Bethesda, MD 20892
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Tiarnan Keenan 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20892 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$147.85 typical visit price
range $65.18 – $194.86
Typical copayment $36.96 (range $16.29 – $48.71)
Most-billed visit code 99204
Established Patient
$80.66 typical visit price
range $21.40 – $158.88
Typical copayment $20.16 (range $5.35 – $39.72)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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. ELLEN WERBER LESCHEK M.D.
Pediatrics (Pediatric Endocrinology)
9000 ROCKVILLE PIKE, NATIONAL INSTITUTES OF HEALTH - CLINICAL CENTER, PEDIAT
BETHESDA, MD 20892
Montgomery County (301) 451-9229
DR. CONSTANTINE A STRATAKIS MD, D(MED)SCI, PHD
Medical Genetics (Clinical Genetics (M.D.))
9000 ROCKVILLE PIKE
BETHESDA, MD 20892
Montgomery County (301) 496-2315
JOANN MARIE MICAN
Internal Medicine (Infectious Disease)
9000 ROCKVILLE PIKE
BETHESDA, MD 20892
Montgomery County (240) 565-4969
HEALTH AND HUMAN SERVICES
Public Health or Welfare
9000 ROCKVILLE PIKE, BUILDING 10 ROOM 1C711 MSC 1184
BETHESDA, MD 20892
Montgomery County (301) 435-4801
OLIVIA MARIE REMSBERG CRNP-FAMILY
Nurse Practitioner (Family)
9000 ROCKVILLE PIKE
BETHESDA, MD 20892
Montgomery County (301) 496-4000
KAMIL RECHACHE MD
Internal Medicine
9000 ROCKVILLE PIKE
BETHESDA, MD 20892
Montgomery County (301) 496-4000
JO ANNE ZUJEWSKI M.D.
Internal Medicine (Medical Oncology)
9000 ROCKVILLE PIKE, BLDG 10
BETHESDA, MD 20892
Montgomery County (301) 435-9207
CYNTHIA MOCK
Pharmacist
9000 ROCKVILLE PIKE
BETHESDA, MD 20892
Montgomery County (240) 491-8760

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 Tiarnan Keenan's NPI number?

The NPI number for Tiarnan Keenan is 1801618186. It was assigned to this individual provider in the NPPES registry on October 29, 2024.

Where is Tiarnan Keenan located?

Tiarnan Keenan practices at 9000 Rockville Pike, Bethesda, MD 20892. The listed phone number is (301) 451-6330.

What is Tiarnan Keenan's specialty?

The primary specialty registered for this NPI is Ophthalmology, specializing in Retina Specialist, with taxonomy code 207WX0107X.

Is Tiarnan Keenan enrolled in Medicare?

Yes. Tiarnan Keenan is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Tiarnan Keenan was last updated on October 29, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.