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KATHERINE ONNEN RYKEN M.D.
NPI 1487185633
Obstetrics & Gynecology in Buffalo, NY

Active since March 21, 2017PECOS Enrolled
565 ABBOTT RD, BUFFALO, NY 14220(206) 520-5000 Get Directions Write a Review

NPPES record last updated: March 27, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Mar 27, 2026, Aug 12, 2025, Jul 16, 2021 and 1 more (4 updates tracked since 2017).

About Katherine Onnen Ryken M.d. NPPES

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

KATHERINE ONNEN RYKEN M.D. (NPI 1487185633) is an individual obstetrics & gynecology provider in Buffalo, New York, licensed in New York (322155) and active in the NPI registry since March 2017. She is enrolled in Medicare PECOS and is a graduate of Other (2017).

NPPES Registry Identity

NPI1487185633
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameKATHERINE ONNEN RYKENCredential: M.D.
Location Address565 ABBOTT RDBuffalo, NY 14220-2039
Mailing Address565 Abbott RdBuffalo, NY 14220-2039
Phone(206) 520-5000
Sole ProprietorNo
Medical School CMSOtherGraduated 2017
Enumeration DateMarch 21, 2017
Last NPPES UpdateMarch 27, 20264 updates tracked since enumeration
NPPES CertifiedMarch 27, 2026
✔ NPI 1487185633 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
Licenses✔ Licensed in NY · 322155✔ Licensed in AK · 241504✔ Licensed in WA · MD61136628✔ Licensed in ME · MD29498✔ Licensed in CO · 0076454
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
565 ABBOTT RD, Buffalo, NY 14220
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Other Identifiers 1

Medicaid1487185633WA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Katherine Onnen Ryken M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID446599393
PECOS Enrollment IDI20250911003412, I20260421000875
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 14220 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 $54.87 – $166.88
Typical copayment $31.60 (range $13.71 – $41.72)
Most-billed visit code 99204
Established Patient
$68.57 typical visit price
range $17.54 – $136.14
Typical copayment $17.14 (range $4.38 – $34.03)
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.

ERIN ELIZABETH URBAN PHARM.D
Pharmacist
565 ABBOTT RD
BUFFALO, NY 14220
Erie County (716) 826-7000
DEBORAH MARIE GIERMEK RN
Registered Nurse
565 ABBOTT RD
BUFFALO, NY 14220
Erie County (716) 826-7000
CATHERINE ELAINE ALMETER PA
Physician Assistant
565 ABBOTT RD
BUFFALO, NY 14220
Erie County (716) 826-7000
CHRISTOPHER DAMELIO
Nurse Practitioner
565 ABBOTT RD
BUFFALO, NY 14220
Erie County (716) 826-7000
MARY L NOLAN PA
Physician Assistant
565 ABBOTT RD, @ MERCY HOSPITAL OF BUFFALO
BUFFALO, NY 14220
Erie County (518) 383-5450
CATHOLIC HEALTH SYSTEM
Student in an Organized Health Care Education/Training Program
565 ABBOTT RD
BUFFALO, NY 14220
Erie County (716) 828-2557
JULIE PONCE NP
Nurse Practitioner (Adult Health)
565 ABBOTT RD
BUFFALO, NY 14220
Erie County (716) 826-7000
ANTHONY VINCENT STOCKUS P.A.
Physician Assistant (Medical)
565 ABBOTT RD
BUFFALO, NY 14220
Erie County (716) 828-2055

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 Katherine Ryken's NPI number?

The NPI number for Katherine Ryken is 1487185633. It was assigned to this individual provider in the NPPES registry on March 21, 2017.

Where is Katherine Ryken located?

Katherine Ryken practices at 565 Abbott Rd, Buffalo, NY 14220. The listed phone number is (206) 520-5000.

What is Katherine Ryken's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Katherine Ryken enrolled in Medicare?

Yes. Katherine Ryken is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Katherine Ryken was last updated on March 27, 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.