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DR. RUHERI A PEREZ-TAMAYO MD,PHD
NPI 1881655397
Thoracic Surgery (Cardiothoracic Vascular Surgery) in Mchenry, IL

Active since April 01, 2006PECOS EnrolledAccepts Medicare Assignment
4309 MEDICAL CENTER DRIVE, STE. A200, MCHENRY, IL 60050(815) 759-4699(815) 759-8938 Get Directions Write a Review

NPPES record last updated: February 4, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Feb 4, 2022, Mar 18, 2021, Apr 21, 2020 (3 updates tracked since 2020).

About Dr. Ruheri A Perez-tamayo Md,phd NPPES

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

DR. RUHERI A PEREZ-TAMAYO MD,PHD (NPI 1881655397) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in Mchenry, Illinois, licensed in Illinois (036100023) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Loyola University Medical Center, and maintains a secondary practice location in Crown Point.

NPPES Registry Identity

NPI1881655397
Entity TypeIndividualMale
Primary Taxonomy208G00000X
Provider Legal NameDR. RUHERI A PEREZ-TAMAYOCredential: MD,PHD
Location Address4309 MEDICAL CENTER DRIVE, STE. A200Mchenry, IL 60050
Mailing Address321 S Ashland AveLa Grange, IL 60525-6307 · (708) 822-3064 · Fax (866) 288-5185
Phone(815) 759-4699
Fax(815) 759-8938
Sole ProprietorNo
Medical School CMSOtherGraduated 1990
Enumeration DateApril 1, 2006
Last NPPES UpdateFebruary 4, 20223 updates tracked since enumeration
NPPES CertifiedFebruary 4, 2022
✔ NPI 1881655397 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyThoracic Surgery (Cardiothoracic Vascular Surgery)Allopathic & Osteopathic Physicians
Taxonomy Code208G00000X
License✔ Licensed in IL · 036100023
Definition
A thoracic surgeon provides the operative, perioperative and critical care of patients with pathologic conditions within the chest. Included is the surgical care of coronary artery disease, cancers of the lung, esophagus and chest wall, abnormalities of the trachea, abnormalities of the great vessels and heart valves, congenital anomalies, tumors of the mediastinum and diseases of the diaphragm. The management of the airway and injuries of the chest is within the scope of the specialty.
Also ListedSurgery · Surgical Critical CareTaxonomy 2086S0102X · License 036100023 (IL)
4309 MEDICAL CENTER DRIVE, Mchenry, IL 60050
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Other Names 1

Other Name (5)Dr. R Anthony Perez-tamayo Md, Phd

Secondary Practice Location 1

Location 11205 S Main St Ste 101Crown Point, IN 46307-3677 · Phone (219) 662-0077

Accepted Insurance

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

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. Ruheri A Perez-tamayo Md,phd 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 ID5092724377
PECOS Enrollment IDI20060413000657
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

6

Medicare enrollment records show Ruheri Perez-tamayo reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Cardiac Surgery Associates Sc
37 mi
Thoracic Surgery (Cardiothoracic Vascular Surgery)
2650 WARRENVILLE RD, SUITE 280
Downers Grove, IL 60515
  • Reassigned Medicare billing, Illinois enrollment
  • 31 clinicians in this Medicare group
NPI 1043269160 (630) 324-7900
Loyola University Medical Center
39 mi
General Practice
2160 S 1ST AVE
Maywood, IL 60153
  • Reassigned Medicare billing, Illinois enrollment
  • 1,138 clinicians in this Medicare group
NPI 1336159961 (708) 216-3215
Agnesian Healthcare
83 mi
Mental Health (Including Community Mental Health Center)
200 FRONT ST, SUITE 3D
Beaver Dam, WI 53916
  • Reassigned Medicare billing, Wisconsin enrollment
  • 606 clinicians in this Medicare group
NPI 1700817657 (920) 885-2780
Franciscan Physician Network
117 mi
Urgent Care
1515 W DRAGOON TRL
Mishawaka, IN 46544
  • Reassigned Medicare billing, Indiana enrollment
  • 1,396 clinicians in this Medicare group
NPI 1366879009 (574) 254-6253
Saint Joseph Regional Medical Center, Inc.
120 mi
Family Medicine
60101 BODNAR BLVD STE 100B
Mishawaka, IN 46544
  • Reassigned Medicare billing, Indiana enrollment
  • 205 clinicians in this Medicare group
NPI 1467406074 (574) 335-8500
Osf Multi-Specialty Group
127 mi
Internal Medicine
8600 N STATE ROUTE 91
Peoria, IL 61615
  • Reassigned Medicare billing, Illinois enrollment
  • 2,944 clinicians in this Medicare group
NPI 1154908929 (309) 683-5050

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.

Replacement of aortic valve through the skin and femoral artery 33361
This procedure, known as Transcatheter Aortic Valve Replacement (TAVR), involves replacing a damaged aortic valve through a small incision in the leg. A catheter is inserted into the femoral artery and guided up to the heart. The new valve is then positioned and deployed, restoring normal blood flow.
34 services34 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.
20 services20 patients

Hospital Affiliations CMS Care Compare

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

Loyola University Medical Center

Acute Care Hospitals · Maywood, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140276
Location2160 S 1st AvenueMaywood, IL 60153 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60050 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
$168.44 typical visit price
range $54.80 – $168.44
Typical copayment $42.11 (range $13.70 – $42.11)
Most-billed visit code 99205
Established Patient
$68.64 typical visit price
range $17.16 – $136.56
Typical copayment $17.16 (range $4.29 – $34.14)
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 2

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

MR. SAAD KHAN M.D.
Internal Medicine
4309 MEDICAL CENTER DRIVE
MCHENRY, IL 60050
McHenry County (815) 344-5000
DR. JAMES SKOPEC M.D.
Internal Medicine
4309 MEDICAL CENTER DRIVE, B202
MCHENRY, IL 60050
McHenry County (815) 344-3900

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 Ruheri Perez-tamayo's NPI number?

The NPI number for Ruheri Perez-tamayo is 1881655397. It was assigned to this individual provider in the NPPES registry on April 1, 2006. The provider is also known as Dr. R Anthony Perez-Tamayo MD, Phd.

Where is Ruheri Perez-tamayo located?

Ruheri Perez-tamayo practices at 4309 Medical Center Drive Ste. A200, Mchenry, IL 60050. The listed phone number is (815) 759-4699.

What is Ruheri Perez-tamayo's specialty?

The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.

Is Ruheri Perez-tamayo enrolled in Medicare?

Yes. Ruheri Perez-tamayo 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 Ruheri Perez-tamayo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ruheri Perez-tamayo reassigns Medicare benefits to 6 organizations: Cardiac Surgery Associates Sc (Downers Grove, IL), Loyola University Medical Center (Maywood, IL), Agnesian Healthcare (Beaver Dam, WI), Franciscan Physician Network (Mishawaka, IN), Saint Joseph Regional Medical Center, Inc. (Mishawaka, IN) and 1 more organization, listed in the Medicare section above. 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 Ruheri Perez-tamayo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ruheri Perez-tamayo accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Aspirus Health Plan, CareSource and Dean Health Plan list Ruheri Perez-tamayo 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 Ruheri Perez-tamayo affiliated with any hospitals?

According to CMS data, Ruheri Perez-tamayo is affiliated with Loyola University Medical Center.

When was this NPI record last updated?

The NPPES record for Ruheri Perez-tamayo was last updated on February 4, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.