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DR. WILLIAM ROBERT MILLS M.D.
NPI 1215140587
Internal Medicine in Beachwood, OH

Active since May 07, 2007PECOS EnrolledAccepts Medicare Assignment
3733 PARK EAST DR STE 220, BEACHWOOD, OH 44122(440) 368-6868(855) 453-5010 Get Directions Write a Review

NPPES record last updated: May 13, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 13, 2025, Dec 18, 2018, Apr 23, 2018 (3 updates tracked since 2018).

About Dr. William Robert Mills M.d. NPPES

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

DR. WILLIAM ROBERT MILLS M.D. (NPI 1215140587) is an individual internal medicine provider in Beachwood, Ohio, licensed in Ohio (35083334) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS and is a graduate of Other (2002).

NPPES Registry Identity

NPI1215140587
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. WILLIAM ROBERT MILLSCredential: M.D.
Location Address3733 PARK EAST DR STE 220Beachwood, OH 44122-4337
Mailing Address3733 Park East Dr Ste 220Beachwood, OH 44122-4337 · (440) 368-6868 · Fax (855) 453-5010
Phone(440) 368-6868
Fax(855) 453-5010
Sole ProprietorNo
Medical School CMSOtherGraduated 2002
Enumeration DateMay 7, 2007
Last NPPES UpdateMay 13, 20253 updates tracked since enumeration
NPPES CertifiedMay 13, 2025
✔ NPI 1215140587 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in OH · 35083334
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.
3733 PARK EAST DR STE 220, Beachwood, OH 44122
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Other Identifiers 1

Medicaid2835778OH

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, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. William Robert Mills 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 ID9133295488
PECOS Enrollment IDI20080910000295, I20251008002956
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

3

Medicare enrollment records show William Mills reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mills Medical Practices, LLC
Same address
Primary Care
3733 PARK EAST DR STE 220
Beachwood, OH 44122
  • Reassigned Medicare billing, Ohio enrollment
  • 80 clinicians in this Medicare group
NPI 1477701969 (800) 807-6555
Abode Care Partners Ltc Vb, LLC
163 mi
Nurse Practitioner
540 SUNNYSIDE DR
Flushing, MI 48433
NPI 1750151627 (800) 807-6555
Abode Care Partners Al Vb, LLC
209 mi
Nurse Practitioner
5467 CEDAR VILLAGE DR
Mason, OH 45040
NPI 1104695550 (800) 807-6555

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 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.

Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes 99349
An established patient home visit is a medical appointment conducted at your home, typically lasting around 40 minutes. This service is ideal for patients who may find it difficult to travel to a healthcare facility. During this visit, a healthcare professional will evaluate your health status, manage your care, and answer any health-related questions you may have.
28 services24 patients
Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians a G0179
This procedure involves a doctor or approved practitioner reviewing your health status and re-certifying your need for Medicare-covered home health services. It includes communication with the home health agency and assessment of your health reports, even when you're not physically present.
17 services15 patients
Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180
This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.
15 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 44122 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
$126.12 typical visit price
range $54.34 – $166.65
Typical copayment $31.53 (range $13.58 – $41.66)
Most-billed visit code 99204
Established Patient
$96.44 typical visit price
range $17.10 – $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.

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.

ERIN KAYE MURRAY
Nurse Practitioner (Family)
3733 PARK EAST DR STE 220
BEACHWOOD, OH 44122
Cuyahoga County (800) 807-6555
MILLS MEDICAL PRACTICES, LLC
Clinic/Center (Primary Care)
3733 PARK EAST DR STE 220
BEACHWOOD, OH 44122
Cuyahoga County (800) 807-6555

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 William Mills's NPI number?

The NPI number for William Mills is 1215140587. It was assigned to this individual provider in the NPPES registry on May 7, 2007.

Where is William Mills located?

William Mills practices at 3733 Park East Dr Ste 220, Beachwood, OH 44122. The listed phone number is (440) 368-6868.

What is William Mills's specialty?

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

Is William Mills enrolled in Medicare?

Yes. William Mills 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 William Mills's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Mills reassigns Medicare benefits to 3 organizations: Mills Medical Practices, LLC (Beachwood, OH), Abode Care Partners Ltc Vb, LLC (Flushing, MI) and Abode Care Partners Al Vb, LLC (Mason, OH). 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 William Mills's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Mills accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian and Molina Healthcare list William Mills 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.

When was this NPI record last updated?

The NPPES record for William Mills was last updated on May 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.