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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.

NIELS AUGUST RYDEN MD
NPI 1922709633
Internal Medicine in Jbsa-fort Sam Houston, TX

Active since March 10, 2023PECOS Enrolled
3551 ROGER BROOKE DR., MCHE-ZDM-M, INTERNAL MEDICINE RESIDENCY, JBSA-FORT SAM HOUSTON, TX 78234(210) 292-7805(210) 292-7868 Get Directions Write a Review

NPPES record last updated: June 18, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Apr 8, 2025, Mar 14, 2025, Aug 16, 2023 and 1 more (4 updates tracked since 2023).

About Niels August Ryden Md NPPES

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

NIELS AUGUST RYDEN MD (NPI 1922709633) is an individual internal medicine provider in Jbsa-fort Sam Houston, Texas, licensed in Virginia (0101284713) and active in the NPI registry since March 2023. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1922709633
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameNIELS AUGUST RYDENCredential: MD
Location Address3551 ROGER BROOKE DR., MCHE-ZDM-M, INTERNAL MEDICINE RESIDENCYJbsa-fort Sam Houston, TX 78234-4504
Mailing Address3551 Roger Brooke Dr., Mche-zdm-m, Internal Medicine ResidencyJbsa-fort Sam Houston, TX 78234-4504 · (210) 292-7805 · Fax (210) 292-7868
Phone(210) 292-7805
Fax(210) 292-7868
Sole ProprietorNo
Enumeration DateMarch 10, 2023
Last NPPES UpdateJune 18, 20264 updates tracked since enumeration
NPPES CertifiedJune 18, 2026
✔ NPI 1922709633 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in VA · 0101284713
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.
3551 ROGER BROOKE DR., Jbsa-fort Sam Houston, TX 78234
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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)

Niels August Ryden 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78234 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
$126.40 typical visit price
range $54.84 – $166.88
Typical copayment $31.60 (range $13.71 – $41.72)
Most-billed visit code 99204
Established Patient
$97.05 typical visit price
range $17.52 – $136.11
Typical copayment $24.26 (range $4.38 – $34.02)
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 10

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ALEXANDER WILLIAMS MD
General Practice
3551 ROGER BROOKE DR.
JBSA-FORT SAM HOUSTON, TX 78234
Bexar County (210) 292-7805
DR. BRIAN JOHN KIRKWOOD DDS
Dentist (General Practice)
3551 ROGER BROOKE DR.
FORT SAM HOUSTON, TX 78234
Bexar County (210) 221-0826
DONOVAN YORK TRUDEAU DO
General Practice
3551 ROGER BROOKE DR., BROOKE ARMY MEDICAL CENTER, MCHE-MDX, INTERNAL MEDICINE
JBSA-FORT SAM HOUSTON, TX 78234
Bexar County (210) 292-3410
DR. MATTHEW DONALD SMITH SR. M.D.
Anesthesiology
3551 ROGER BROOKE DR., MCHE/ME
JBSA FORT SAM HOUSTON, TX 78234
Bexar County (812) 360-0272
JOHN LEO KILEY MD
Internal Medicine (Infectious Disease)
3551 ROGER BROOKE DR.
JBSA-FORT SAM HOUSTON, TX 78234
Bexar County (210) 916-5554
DR. IAN PRICHARD DO, RDCS
Internal Medicine
3551 ROGER BROOKE DR., MCHE-ZDM-M, INTERNAL MEDICINE RESIDENCY
JBSA-FORT SAM HOUSTON, TX 78234
Bexar County (210) 916-5910
PATRICK MCCLURE MUEHLBERGER MD
Emergency Medicine
3551 ROGER BROOKE DR., DEM
SAN ANTONIO, TX 78234
Bexar County (210) 216-0808
DR. DAVID JOSEPH WILSON MD, FAAOS, FAOA
Orthopaedic Surgery (Hand Surgery)
3551 ROGER BROOKE DR.
FORT SAM HOUSTON, TX 78234
Bexar County (210) 916-2048

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 Niels Ryden's NPI number?

The NPI number for Niels Ryden is 1922709633. It was assigned to this individual provider in the NPPES registry on March 10, 2023.

Where is Niels Ryden located?

Niels Ryden practices at 3551 Roger Brooke Dr. Mche-Zdm-M, Internal Medicine Residency, Jbsa-Fort Sam Houston, TX 78234. The listed phone number is (210) 292-7805.

What is Niels Ryden's specialty?

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

Is Niels Ryden enrolled in Medicare?

Yes. Niels Ryden is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Niels Ryden was last updated on June 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 49 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.