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DR. STEPHEN GERARD CHRZANOWSKI MD
NPI 1013966647
Internal Medicine in West Seneca, NY

Active since May 10, 2006PECOS EnrolledAccepts Medicare Assignment
290 CENTER RD, WEST SENECA, NY 14224(716) 675-0707(716) 674-1836 Get Directions Write a Review

NPPES record last updated: November 23, 2010. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Stephen Gerard Chrzanowski Md NPPES

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

DR. STEPHEN GERARD CHRZANOWSKI MD (NPI 1013966647) is an individual internal medicine provider in West Seneca, New York, licensed in New York (2100441) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital Of Buffalo, and is a graduate of New York Medical College (1995).

NPPES Registry Identity

NPI1013966647
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. STEPHEN GERARD CHRZANOWSKICredential: MD
Location Address290 CENTER RDWest Seneca, NY 14224
Mailing Address290 Center RdWest Seneca, NY 14224 · (716) 675-0707 · Fax (716) 674-1836
Phone(716) 675-0707
Fax(716) 674-1836
Sole ProprietorNo
Medical School CMSNew York Medical CollegeGraduated 1995
Enumeration DateMay 10, 2006
Last NPPES UpdateNovember 23, 2010
✔ NPI 1013966647 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NY · 2100441
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.
290 CENTER RD, West Seneca, NY 14224
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Other Identifiers 5

Other000525367004Bcbs
Other0410546Iha
Other00010367304Univera
Medicare UPINB82336
Medicare ID-Type UnspecifiedBB5962

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

Dr. Stephen Gerard Chrzanowski Md 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 ID4082615471
PECOS Enrollment IDI20110701000221
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

4

Medicare enrollment records show Stephen Chrzanowski reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Chs Neuroscience Group
2.2 mi
Neurology
565 ABBOTT RD
Buffalo, NY 14220
  • Reassigned Medicare billing, New York enrollment
  • Medicare enrollment name: Mercy Hospital Of Buffalo
  • 499 clinicians in this Medicare group
NPI 1972883304 (716) 826-7000
Sisters Of Charity Hospital Of Buffalo New York
5.1 mi
General Acute Care Hospital
2605 HARLEM RD
Cheektowaga, NY 14225
  • Reassigned Medicare billing, New York enrollment
  • 515 clinicians in this Medicare group
NPI 1043455199 (716) 891-2400
Kenmore Mercy Hospital
11 mi
General Acute Care Hospital
2950 ELMWOOD AVE
Kenmore, NY 14217
  • Reassigned Medicare billing, New York enrollment
  • 271 clinicians in this Medicare group
NPI 1770598104 (716) 447-6100
Mount St. Mary's Hospital Of Niagara Falls
25 mi
General Acute Care Hospital
5300 MILITARY RD
Lewiston, NY 14092
  • Reassigned Medicare billing, New York enrollment
  • Medicare enrollment name: Mount St. Marys Hospital Of Niagara Falls
  • 289 clinicians in this Medicare group
NPI 1043394745 (716) 298-2081

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 2

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
142 services71 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
24 services23 patients

Hospital Affiliations CMS Care Compare

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

Mercy Hospital Of Buffalo

Acute Care Hospitals · Buffalo, NY
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330279
Location565 Abbott RoadBuffalo, NY 14220 · Erie County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 14224 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
$97.08 typical visit price
range $17.54 – $136.14
Typical copayment $24.27 (range $4.38 – $34.03)
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 13

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

MRS. TINA LOUISE VANDERMEER-GATTI FNP
Nurse Practitioner (Family)
290 CENTER RD
WEST SENECA, NY 14224
Erie County (716) 675-7693
MARTIN A. CASEY, MD
Family Medicine
290 CENTER RD
WEST SENECA, NY 14224
Erie County (716) 675-7693
MARTIN A CASEY M.D.
Family Medicine
290 CENTER RD
WEST SENECA, NY 14224
Erie County (716) 675-7693
LINDA M BLAZIER NP
Nurse Practitioner (Adult Health)
290 CENTER RD
WEST SENECA, NY 14224
Erie County (716) 677-4159
MRS. HYUN JIN LIM-SOH M.D.
Ophthalmology
290 CENTER RD
WEST SENECA, NY 14224
Erie County (716) 674-2393
MARALYNN JOHNSON MASSAGE THERAPIST
Massage Therapist
290 CENTER RD
WEST SENECA, NY 14224
Erie County (716) 553-6483
CHRISTINA ANN DUDZIAK FNP
Nurse Practitioner (Family)
290 CENTER RD
WEST SENECA, NY 14224
Erie County (716) 675-7693
MRS. SHARI LEFAUVE RPA-C
Physician Assistant
290 CENTER RD
WEST SENECA, NY 14224
Erie County (716) 675-7693

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 Stephen Chrzanowski's NPI number?

The NPI number for Stephen Chrzanowski is 1013966647. It was assigned to this individual provider in the NPPES registry on May 10, 2006.

Where is Stephen Chrzanowski located?

Stephen Chrzanowski practices at 290 Center Rd, West Seneca, NY 14224. The listed phone number is (716) 675-0707.

What is Stephen Chrzanowski's specialty?

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

Is Stephen Chrzanowski enrolled in Medicare?

Yes. Stephen Chrzanowski 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 Stephen Chrzanowski's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Chrzanowski reassigns Medicare benefits to 4 organizations: Chs Neuroscience Group (Buffalo, NY), Sisters Of Charity Hospital Of Buffalo New York (Cheektowaga, NY), Kenmore Mercy Hospital (Kenmore, NY) and Mount St. Mary's Hospital Of Niagara Falls (Lewiston, 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 Stephen Chrzanowski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Stephen Chrzanowski affiliated with any hospitals?

According to CMS data, Stephen Chrzanowski is affiliated with Mercy Hospital Of Buffalo.

When was this NPI record last updated?

The NPPES record for Stephen Chrzanowski was last updated on November 23, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.