1. Home
  2. Directory
  3. Michigan
  4. Ann Arbor
  5. Internal Medicine
  6. NPI Profile

KATERINA NIKOLAYEVNA CASTILLO MD
NPI 1932782273
Internal Medicine in Ann Arbor, MI

Active since May 04, 2021PECOS EnrolledAccepts Medicare Assignment
1500 E MEDICAL CENTER DR, ANN ARBOR, MI 48109(734) 936-4000 Get Directions Write a Review

NPPES record last updated: July 21, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Katerina Nikolayevna Castillo Md NPPES

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

KATERINA NIKOLAYEVNA CASTILLO MD (NPI 1932782273) is an individual internal medicine provider in Ann Arbor, Michigan, licensed in Michigan (4301513827) and active in the NPI registry since May 2021. She is enrolled in Medicare PECOS, is affiliated with University Of Michigan Health System, and maintains a secondary practice location in Canton.

NPPES Registry Identity

NPI1932782273
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameKATERINA NIKOLAYEVNA CASTILLOCredential: MD
Location Address1500 E MEDICAL CENTER DRAnn Arbor, MI 48109-5000
Mailing Address3621 S State StAnn Arbor, MI 48108-1633 · (734) 647-5299
Phone(734) 936-4000
Sole ProprietorNo
Medical School CMSMayo Medical SchoolGraduated 2021
Enumeration DateMay 4, 2021
Last NPPES UpdateJuly 21, 2025
NPPES CertifiedJuly 21, 2025
✔ NPI 1932782273 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MI · 4301513827
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.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License 4351047461 (MI)
1500 E MEDICAL CENTER DR, Ann Arbor, MI 48109
Open in Google Maps ↗

Secondary Practice Location 1

Location 11051 N Canton Center RdCanton, MI 48187-5097 · Phone (734) 844-5400

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Katerina Nikolayevna Castillo 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 ID4082016324
PECOS Enrollment IDI20250819001242
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.

Hospital Affiliations CMS Care Compare 2

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

University Of Michigan Health System

Acute Care Hospitals · Ann Arbor, MI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number230046
Location1500 E Medical Center Drive, Spc 5474Ann Arbor, MI 48109 · Washtenaw County
Emergency services Birthing friendly

Chelsea Hospital

Acute Care Hospitals · Chelsea, MI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number230259
Location775 S Main StChelsea, MI 48118 · Washtenaw County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48109 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
$134.28 typical visit price
range $58.04 – $177.36
Typical copayment $33.57 (range $14.51 – $44.34)
Most-billed visit code 99204
Established Patient
$102.35 typical visit price
range $18.32 – $143.49
Typical copayment $25.58 (range $4.58 – $35.87)
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 20

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

LOKMAN SUNG MD
Pathology (Forensic Pathology)
1500 E MEDICAL CENTER DR, 2ND FLOOR UNIVERSITY HOSPITAL RECP PATHOLOGY
ANN ARBOR, MI 48109
Washtenaw County (800) 862-7284
SAMEER DEV SAINI M.D.
Internal Medicine (Gastroenterology)
1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109
Washtenaw County (734) 936-4000
KYLE DAVID PERRY MD
Pathology (Cytopathology)
1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109
Washtenaw County (734) 936-4000
DR. DAVID ALEXANDER STEWART M.D.
Pediatrics
1500 E MEDICAL CENTER DR, 12TH FLOOR C.S. MOTT CHILDREN'S HOSPITAL ROOM 525
ANN ARBOR, MI 48109
Washtenaw County (734) 763-5302
DR. MICHAEL EDMUND WATSON MD
Pediatrics (Pediatric Infectious Diseases)
1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109
Washtenaw County (734) 936-4000
CARRIE KRAEGER PORTER PA-C
Physician Assistant
1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109
Washtenaw County (734) 936-6666
DENISE LYNN BERRY CRNA
Nurse Anesthetist, Certified Registered
1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109
Washtenaw County (734) 936-4000
KETTI SOPHIA PETERSEN MD
Family Medicine (Hospice and Palliative Medicine)
1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109
Washtenaw County (734) 936-4000

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 Katerina Castillo's NPI number?

The NPI number for Katerina Castillo is 1932782273. It was assigned to this individual provider in the NPPES registry on May 4, 2021.

Where is Katerina Castillo located?

Katerina Castillo practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. The listed phone number is (734) 936-4000.

What is Katerina Castillo's specialty?

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

Is Katerina Castillo enrolled in Medicare?

Yes. Katerina Castillo 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.

What insurance does Katerina Castillo accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 1 other insurer list Katerina Castillo as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Katerina Castillo affiliated with any hospitals?

According to CMS data, Katerina Castillo is affiliated with University Of Michigan Health System and Chelsea Hospital.

When was this NPI record last updated?

The NPPES record for Katerina Castillo was last updated on July 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.