BENJAMIN JOHN DIACZOK I MD
NPI 1760480834
Internal Medicine in Pontiac, MI

Active since July 12, 2005PECOS EnrolledAccepts Medicare Assignment
44428 WOODWARD AVE STE 102, PONTIAC, MI 48341(248) 858-3126(248) 858-6499 Get Directions Write a Review

NPPES record last updated: April 3, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Apr 3, 2025, Mar 7, 2023 (2 updates tracked since 2023).

About Benjamin John Diaczok I Md NPPES

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

BENJAMIN JOHN DIACZOK I MD (NPI 1760480834) is an individual internal medicine provider in Pontiac, Michigan, licensed in Michigan (4301050499) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS, is affiliated with Trinity Health Oakland Hospital, and is a graduate of Wayne State University School Of Medicine (1985).

NPPES Registry Identity

NPI1760480834
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameBENJAMIN JOHN DIACZOK ICredential: MD
Location Address44428 WOODWARD AVE STE 102Pontiac, MI 48341-5009
Mailing Address24 Frank Lloyd Wright Dr # J2000Ann Arbor, MI 48105-9484 · (734) 747-6766 · Fax (734) 222-3100
Fax(248) 858-6499
Sole ProprietorNo
Medical School CMSWayne State University School Of MedicineGraduated 1985
Enumeration DateJuly 12, 2005
Last NPPES UpdateApril 3, 20252 updates tracked since enumeration
NPPES CertifiedApril 3, 2025
NPI 1760480834 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 · 4301050499
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.
44428 WOODWARD AVE STE 102, Pontiac, MI 48341

Other Identifiers 2

Medicaid348812110MI
Other4301050499MI · Controlled Substance

Accepted 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

Benjamin John Diaczok I 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 ID1355350463
PECOS Enrollment IDI20060419000023
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.
73 services36 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
22 services20 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.
22 services17 patients

Hospital Affiliations CMS Care Compare

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

Trinity Health Oakland Hospital

Acute Care Hospitals · Pontiac, MI
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number230029
Location44405 Woodward AvePontiac, MI 48341 · Oakland County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48341 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 5

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

Internal Medicine
44428 WOODWARD AVE STE 102
PONTIAC, MI 48341
Internal Medicine
44428 WOODWARD AVE STE 102
PONTIAC, MI 48341
Family Medicine
44428 WOODWARD AVE STE 102
PONTIAC, MI 48341
Internal Medicine
44428 WOODWARD AVE STE 102
PONTIAC, MI 48341
Internal Medicine
44428 WOODWARD AVE STE 102
PONTIAC, MI 48341

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 Benjamin Diaczok's NPI number?

The NPI number for Benjamin Diaczok is 1760480834. It was assigned to this individual provider in the NPPES registry on July 12, 2005.

Where is Benjamin Diaczok located?

Benjamin Diaczok practices at 44428 Woodward Ave Ste 102, Pontiac, MI 48341. The listed phone number is (248) 858-3126.

What is Benjamin Diaczok's specialty?

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

Is Benjamin Diaczok enrolled in Medicare?

Yes. Benjamin Diaczok 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 Benjamin Diaczok accept?

Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company and Priority Health list Benjamin Diaczok 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 Benjamin Diaczok affiliated with any hospitals?

According to CMS data, Benjamin Diaczok is affiliated with Trinity Health Oakland Hospital.

When was this NPI record last updated?

The NPPES record for Benjamin Diaczok was last updated on April 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.