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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

SAMUEL RAY KOSYDAR MD
NPI 1619614369
Internal Medicine in Bethesda, MD

Active since May 15, 2022PECOS Enrolled
CLINICAL CENTER 10 CENTER DRIVE BUILDING 10, BETHESDA, MD 20892(301) 496-4000 Get Directions Write a Review

NPPES record last updated: September 13, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 13, 2026, Jul 17, 2023, May 15, 2022 (3 updates tracked since 2022).

About Samuel Ray Kosydar Md NPPES

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

SAMUEL RAY KOSYDAR MD (NPI 1619614369) is an individual internal medicine provider in Bethesda, Maryland, licensed in District Of Columbia (MD600003583) and active in the NPI registry since May 2022. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1619614369
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameSAMUEL RAY KOSYDARCredential: MD
Location AddressCLINICAL CENTER 10 CENTER DRIVE BUILDING 10Bethesda, MD 20892-0001
Mailing AddressClinical Center 10 Center Drive Building 10Bethesda, MD 20892-0001
Phone(301) 496-4000
Sole ProprietorNo
Enumeration DateMay 15, 2022
Last NPPES UpdateSeptember 13, 20263 updates tracked since enumeration
NPPES CertifiedSeptember 13, 2026
✔ NPI 1619614369 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in DC · MD600003583
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.
CLINICAL CENTER 10 CENTER DRIVE BUILDING 10, Bethesda, MD 20892
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Samuel Ray Kosydar Md 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 Samuel Kosydar reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mayo Clinic
867 mi
Infectious Disease
200 1ST ST SW
Rochester, MN 55905
  • Reassigned Medicare billing, Minnesota enrollment
  • 6,534 clinicians in this Medicare group
NPI 1114343860 (507) 284-2511

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

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
$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.

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 Samuel Kosydar's NPI number?

The NPI number for Samuel Kosydar is 1619614369. It was assigned to this individual provider in the NPPES registry on May 15, 2022.

Where is Samuel Kosydar located?

Samuel Kosydar practices at Clinical Center 10 Center Drive Building 10, Bethesda, MD 20892. The listed phone number is (301) 496-4000.

What is Samuel Kosydar's specialty?

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

Is Samuel Kosydar enrolled in Medicare?

Yes. Samuel Kosydar is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Samuel Kosydar's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Samuel Kosydar reassigns Medicare benefits to Mayo Clinic (Rochester, MN). 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 Samuel Kosydar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Samuel Kosydar was last updated on September 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 42 days 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.