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DR. TYLER ERNEST WARKENTIEN M.D.
NPI 1093805350
Internal Medicine - Infectious Disease in Bethesda, MD

Active since October 14, 2006PECOS Enrolled
8901 WISCONSIN AVE, BETHESDA, MD 20889(301) 319-9047 Get Directions Write a Review

NPPES record last updated: November 17, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Nov 17, 2025, Nov 18, 2022 (2 updates tracked since 2022).

About Dr. Tyler Ernest Warkentien M.d. NPPES

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

DR. TYLER ERNEST WARKENTIEN M.D. (NPI 1093805350) is an individual infectious disease provider in Bethesda, Maryland, licensed in Virginia (0101240366) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1093805350
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameDR. TYLER ERNEST WARKENTIENCredential: M.D.
Location Address8901 WISCONSIN AVEBethesda, MD 20889-0004
Mailing Address8901 Wisconsin AveBethesda, MD 20889-0004 · (301) 319-9047
Phone(301) 319-9047
Sole ProprietorNo
Enumeration DateOctober 14, 2006
Last NPPES UpdateNovember 17, 20252 updates tracked since enumeration
NPPES CertifiedNovember 17, 2025
✔ NPI 1093805350 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in VA · 0101240366
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
Also ListedInternal MedicineTaxonomy 207R00000X · License 0101240366 (VA)
8901 WISCONSIN AVE, Bethesda, MD 20889
Open in Google Maps ↗

Secondary Practice Locations 2

Location 1620 John Paul Jones CirPortsmouth, VA 23708-2111 · Phone (757) 953-2277
Location 2Hospital Americano, Base naval de Rota apartado de Correos 33Rota, Cadiz 11530 · Phone (727) 727-3504

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Tyler Ernest Warkentien 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20889 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
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
Most-billed visit code 99214
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. 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
OANA MARIA POVIAN STROIE MD
General Practice
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

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 Tyler Warkentien's NPI number?

The NPI number for Tyler Warkentien is 1093805350. It was assigned to this individual provider in the NPPES registry on October 14, 2006.

Where is Tyler Warkentien located?

Tyler Warkentien practices at 8901 Wisconsin Ave, Bethesda, MD 20889. The listed phone number is (301) 319-9047.

What is Tyler Warkentien's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Tyler Warkentien enrolled in Medicare?

Yes. Tyler Warkentien is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Tyler Warkentien was last updated on November 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.