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DR. ANACLETO BAIZAS DIAZ II M.D.
NPI 1922241942
Internal Medicine in Grand Rapids, MI

Active since April 07, 2009PECOS EnrolledAccepts Medicare Assignment
426 MICHIGAN ST NE, GRAND RAPIDS, MI 49503(616) 267-8338 Get Directions Write a Review

NPPES record last updated: June 27, 2025. Verified against the NPPES registry weekly; last sync: September 06, 2026.

Record update history: Jun 27, 2025, Mar 2, 2021, Jan 7, 2019 (3 updates tracked since 2019).

About Dr. Anacleto Baizas Diaz Ii M.d. NPPES

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

DR. ANACLETO BAIZAS DIAZ II M.D. (NPI 1922241942) is an individual internal medicine provider in Grand Rapids, Michigan, licensed in Michigan (4301088886) and active in the NPI registry since April 2009. He is enrolled in Medicare PECOS, is affiliated with Spectrum Health, and is a graduate of Other (2002).

NPPES Registry Identity

NPI1922241942
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. ANACLETO BAIZAS DIAZ IICredential: M.D.
Location Address426 MICHIGAN ST NEGrand Rapids, MI 49503-5609
Mailing Address100 Michigan St Ne, Mc 845Grand Rapids, MI 49503-2560
Phone(616) 267-8338
Sole ProprietorNo
Medical School CMSOtherGraduated 2002
Enumeration DateApril 7, 2009
Last NPPES UpdateJune 27, 20253 updates tracked since enumeration
NPPES CertifiedJune 27, 2025
✔ NPI 1922241942 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MI · 4301088886
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.
426 MICHIGAN ST NE, Grand Rapids, MI 49503
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, McLaren Health Plan Community 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

Dr. Anacleto Baizas Diaz Ii 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 ID4981896511
PECOS Enrollment IDI20101014000180
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.

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 moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
103 services75 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
38 services38 patients
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.
18 services17 patients

Hospital Affiliations CMS Care Compare 2

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

Spectrum Health

Acute Care Hospitals · Grand Rapids, MI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number230038
Location100 Michigan St NEGrand Rapids, MI 49503 · Kent County
Emergency services Birthing friendly

Corewell Health Reed City Hospital

Critical Access Hospitals · Reed City, MI
OwnershipVoluntary non-profit - Private
CMS Certification Number231323
Location300 N Patterson, PO Box 75Reed City, MI 49677 · Osceola County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 49503 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
$126.15 typical visit price
range $54.34 – $166.68
Typical copayment $31.53 (range $13.58 – $41.67)
Most-billed visit code 99204
Established Patient
$96.44 typical visit price
range $17.09 – $135.40
Typical copayment $24.11 (range $4.27 – $33.85)
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.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
6 suppliers12 claims52 services$4.58 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

DR. NICHOLAS ALEXANDER STEPHANOFF M.D.
Family Medicine
426 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (616) 267-7888
RITA DEKKER
Nurse Practitioner
426 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (616) 391-2778
JENNIFER MARIE SHANLEY CNM
Advanced Practice Midwife
426 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (616) 391-3302
MICHIGAN STREET OPTICAL
Durable Medical Equipment & Medical Supplies
426 MICHIGAN ST NE, SUITE 101
GRAND RAPIDS, MI 49503
Kent County (616) 459-1844
AMY COX MD
Family Medicine
426 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (616) 267-7888
TAMI JOY MICHELE DO
Obstetrics & Gynecology
426 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (616) 391-3302
MARGUERITE B SOWERS PA-C
Physician Assistant (Medical)
426 MICHIGAN ST NE, SUITE 201
GRAND RAPIDS, MI 49503
Kent County (616) 459-8209
MOLLY JANE TIESENGA APRN
Nurse Practitioner (Adult Health)
426 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (616) 267-8338

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 Anacleto Diaz's NPI number?

The NPI number for Anacleto Diaz is 1922241942. It was assigned to this individual provider in the NPPES registry on April 7, 2009.

Where is Anacleto Diaz located?

Anacleto Diaz practices at 426 Michigan St NE, Grand Rapids, MI 49503. The listed phone number is (616) 267-8338.

What is Anacleto Diaz's specialty?

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

Is Anacleto Diaz enrolled in Medicare?

Yes. Anacleto Diaz 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 Anacleto Diaz accept?

Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, McLaren Health Plan Community and Priority Health list Anacleto Diaz 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 Anacleto Diaz affiliated with any hospitals?

According to CMS data, Anacleto Diaz is affiliated with Spectrum Health and Corewell Health Reed City Hospital.

When was this NPI record last updated?

The NPPES record for Anacleto Diaz was last updated on June 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.