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RYAN MCGARRY WALKER M.D.
NPI 1558568170
Surgery in Oswego, NY

Active since June 28, 2007PECOS EnrolledAccepts Medicare Assignment
105 COUNTY ROUTE 45A STE 100, OSWEGO, NY 13126(315) 342-6771(315) 342-2842 Get Directions Write a Review

NPPES record last updated: July 5, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 5, 2023, May 27, 2021, Aug 14, 2020 and 4 more (7 updates tracked since 2016).

About Ryan Mcgarry Walker M.d. NPPES

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

RYAN MCGARRY WALKER M.D. (NPI 1558568170) is an individual surgery provider in Oswego, New York, licensed in New York (272867) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS, is affiliated with Oswego Hospital, and is a graduate of Other (2007).

NPPES Registry Identity

NPI1558568170
Entity TypeIndividualMale
Primary Taxonomy208600000X
Provider Legal NameRYAN MCGARRY WALKERCredential: M.D.
Location Address105 COUNTY ROUTE 45A STE 100Oswego, NY 13126-6665
Mailing Address105 County Route 45a Ste 100Oswego, NY 13126-6665 · (315) 342-6771 · Fax (315) 342-2842
Phone(315) 342-6771
Fax(315) 342-2842
Sole ProprietorNo
Medical School CMSOtherGraduated 2007
Enumeration DateJune 28, 2007
Last NPPES UpdateJuly 5, 20237 updates tracked since enumeration
NPPES CertifiedJuly 5, 2023
✔ NPI 1558568170 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in NY · 272867
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
105 COUNTY ROUTE 45A STE 100, Oswego, NY 13126
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Other Identifiers 1

Medicaid03769573NY

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Ryan Mcgarry Walker M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3173740909
PECOS Enrollment IDI20140819000034
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 Reassignments

5

Medicare enrollment records show Ryan Walker reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Physician Care PC
5.0 mi
Internal Medicine
110 W 6TH ST
Oswego, NY 13126
  • Reassigned Medicare billing, New York enrollment
  • 70 clinicians in this Medicare group
NPI 1073868113 (315) 349-5511
St. Peter's Health Partners Medical Associates, P.C.
136 mi
Cardiovascular Disease
6 CARE LN, SARATOGA CARDIOLOGY ASSOCIATES
Saratoga Springs, NY 12866
  • Reassigned Medicare billing, New York enrollment
  • 742 clinicians in this Medicare group
NPI 1821419656 (518) 587-7625
Priority Medical Services, PLLC
139 mi
Urgent Care
2080 WESTERN AVENUE
Guilderland, NY 12084
  • Reassigned Medicare billing, New York enrollment
  • 6 clinicians in this Medicare group
NPI 1841757440 (518) 867-8040
Empire Wound Physician Services, PLLC
141 mi
General Practice
170 LAKE ST
Liberty, NY 12754
  • Reassigned Medicare billing, New York enrollment
  • 32 clinicians in this Medicare group
NPI 1093130742 (216) 273-9800
Samaritan Hospital Of Troy, New York
148 mi
General Acute Care Hospital
2215 BURDETT AVE
Troy, NY 12180
  • Reassigned Medicare billing, New York enrollment
  • 725 clinicians in this Medicare group
NPI 1043267727 (518) 271-3300

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

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
39 services21 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
23 services23 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
14 services14 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Oswego Hospital

Acute Care Hospitals · Oswego, NY
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330218
Location110 West Sixth StreetOswego, NY 13126 · Oswego County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 13126 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
$84.93 typical visit price
range $54.87 – $166.88
Typical copayment $21.23 (range $13.71 – $41.72)
Most-billed visit code 99203
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 4

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

DR. LISA MARIE LAI MD
Surgery (Surgical Oncology)
105 COUNTY ROUTE 45A STE 100
OSWEGO, NY 13126
Oswego County (315) 312-0089
DR. JEFFREY WITT STRAIN MD, FACS
Surgery
105 COUNTY ROUTE 45A STE 100
OSWEGO, NY 13126
Oswego County (315) 312-0089
DR. OSAMA ESSA MD
Surgery
105 COUNTY ROUTE 45A STE 100
OSWEGO, NY 13126
Oswego County (315) 342-6771
KATELYN LASHELL QUEHL PA-C
Physician Assistant (Medical)
105 COUNTY ROUTE 45A STE 100
OSWEGO, NY 13126
Oswego County (315) 342-6771

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 Ryan Walker's NPI number?

The NPI number for Ryan Walker is 1558568170. It was assigned to this individual provider in the NPPES registry on June 28, 2007.

Where is Ryan Walker located?

Ryan Walker practices at 105 County Route 45A Ste 100, Oswego, NY 13126. The listed phone number is (315) 342-6771.

What is Ryan Walker's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Ryan Walker enrolled in Medicare?

Yes. Ryan Walker is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Ryan Walker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ryan Walker reassigns Medicare benefits to 5 organizations: Physician Care PC (Oswego, NY), St. Peter's Health Partners Medical Associates, P.C. (Saratoga Springs, NY), Priority Medical Services, PLLC (Guilderland, NY), Empire Wound Physician Services, PLLC (Liberty, NY) and Samaritan Hospital Of Troy, New York (Troy, NY). Each 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 Ryan Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Ryan Walker affiliated with any hospitals?

According to CMS data, Ryan Walker is affiliated with Oswego Hospital.

When was this NPI record last updated?

The NPPES record for Ryan Walker was last updated on July 5, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.