DR. ALEXANDER A HARRIS M.D.
NPI 1700236635
Radiology - Radiation Oncology in Elk Grove Village, IL

Q: What is Alexander Harris's NPI number?

The NPI number for Alexander Harris is 1700236635. It was assigned to this individual provider in the NPPES registry on June 22, 2016.

Q: What is Alexander Harris's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Q: When was this NPI record last updated?

The NPPES record for Alexander Harris was last updated on August 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.

Active since June 22, 2016PECOS EnrolledAccepts Medicare Assignment

94.1/100

CMS Quality Rating

800 BIESTERFIELD RD STE 110, ELK GROVE VILLAGE, IL 60007(847) 981-5760(847) 956-5138 Get Directions Write a Review

NPPES record last updated: August 7, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Aug 7, 2026, Dec 24, 2021, Nov 16, 2021 and 2 more (5 updates tracked since 2016).

On this page

About Dr. Alexander A Harris M.d. NPPES

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

DR. ALEXANDER A HARRIS M.D. (NPI 1700236635) is an individual radiation oncology provider in Elk Grove Village, Illinois, licensed in Illinois (036155310) and active in the NPI registry since June 2016. He is enrolled in Medicare PECOS, is affiliated with Advocate Sherman Hospital, and maintains a secondary practice location in Hoffman Estates.

NPPES Registry Identity

NPI1700236635

Entity TypeIndividualMale

Primary Taxonomy2085R0001X

Provider Legal NameDR. ALEXANDER A HARRISCredential: M.D.

Location Address800 BIESTERFIELD RD STE 110Elk Grove Village, IL 60007-3363

Mailing Address700 Commerce Dr Ste 500Oak Brook, IL 60523-8736 · (847) 698-0600 · Fax (847) 698-0601

Phone(847) 981-5760

Fax(847) 956-5138

Sole ProprietorNo

Medical School CMSOtherGraduated 2016

Enumeration DateJune 22, 2016

Last NPPES UpdateAugust 7, 20265 updates tracked since enumeration

NPPES CertifiedAugust 7, 2026

✔ NPI 1700236635 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0001X

Licenses✔ Licensed in IL · 036155310✔ Licensed in MI · 4301110504

Definition

A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.

800 BIESTERFIELD RD STE 110, Elk Grove Village, IL 60007

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Secondary Practice Location 1

Location 11555 N Barrington Rd Ste 1400Hoffman Estates, IL 60169-5038 · Phone (847) 755-8400 · Fax (847) 755-8401

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Oscar Health.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. Alexander A Harris 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 ID1456645399

PECOS Enrollment IDI20210601002398

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 Reassignment

Medicare enrollment records show Alexander Harris reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Radiation Oncology Consultants, Ltd

11 mi

Radiation Oncology

700 COMMERCE DR, SUITE 500
Oak Brook, IL 60523

Reassigned Medicare billing, Illinois enrollment
30 clinicians in this Medicare group

NPI 1164412417 (847) 698-0600

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 18

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.

Ct guidance for insertion of radiation therapy fields 77014

CT guidance for insertion of radiation therapy fields involves using a CT scan to accurately map the area of your body where radiation will be applied. This ensures the radiation targets only the necessary area, minimizing impact to healthy tissues.

469 services83 patients

Calculation of radiation therapy dose 77300

Radiation therapy dose calculation is a process to determine the exact amount of radiation needed to treat a specific area in the body. This calculation helps ensure the treatment is effective while minimizing harm to healthy tissues. It's a key part of planning your radiation therapy.

199 services62 patients

Design and construction of complex radiation treatment device 77334

The design and construction of a complex radiation treatment device is a process where a specialized instrument is created. This device targets harmful cells with high-energy rays to destroy or damage them, while minimizing impact on healthy cells. This aids in treating conditions like cancer.

181 services79 patients

Radiation treatment management, 5 treatment sessions 77427

Radiation treatment management involves a series of 5 sessions where targeted radiation is used to destroy or shrink cancer cells in your body. Each session is carefully planned to maximize effectiveness while minimizing harm to healthy tissues. You may experience side effects which will be closely monitored and managed for your comfort.

170 services77 patients

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.

94 services61 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.

86 services55 patients

Complex radiation therapy planning 77263

Complex radiation therapy planning is a process to determine the most effective way to deliver radiation to a specific area in your body. It involves detailed imaging to map your body's structure, allowing for precise targeting of cancer cells while sparing healthy tissue.

81 services79 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

50 services50 patients

Obtaining data needed to develop the optimal radiation treatment, 1 treatment area 77280

This procedure involves gathering essential information to create the best radiation treatment plan for a specific area. It includes scanning the treatment area and using this data to calculate the precise dose of radiation needed to target the disease effectively, while sparing healthy tissue.

48 services43 patients

Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved 77290

This procedure involves collecting necessary data to plan the best radiation treatment. It may cover 3 or more areas or any area requiring special attention. Data collection includes imaging scans and tests to understand the disease's extent and to tailor a precise, effective treatment plan.

46 services43 patients

Design and construction of radiation treatment device for high precision radiation therapy 77338

A radiation treatment device is custom-made for each patient to target cancer cells with high precision. It's designed to focus radiation on the tumor, sparing healthy tissue. This process ensures effective therapy while minimizing side effects.

45 services41 patients

High precision radiation therapy planning 77301

High precision radiation therapy planning involves detailed mapping of your body to target cancer cells accurately. Advanced imaging techniques help identify the exact location of the tumor, minimizing harm to healthy tissues. This personalized approach enhances effectiveness and reduces side effects.

43 services40 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

39 services33 patients

Complex radiation therapy planning for delivery of external radiation 77307

Complex radiation therapy planning involves creating a detailed plan to deliver targeted radiation doses. The process includes imaging scans to identify the area needing treatment, and designing a specific radiation plan to protect healthy tissue while effectively treating the disease.

31 services27 patients

Obtaining respiratory data needed to develop the optimal radiation treatment 77293

Obtaining respiratory data is vital for optimal radiation treatment. This involves tracking your breathing patterns to ensure the precise delivery of radiation to the target area, minimizing damage to healthy tissue. It's a non-invasive process and contributes to effective treatment.

23 services22 patients

Special radiation treatment 77470

Special radiation treatment is a medical procedure that uses high-energy rays to destroy or damage cancer cells. It's a targeted approach that aims to minimize harm to healthy tissues. The treatment duration varies based on individual health conditions.

20 services20 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

18 services18 patients

Management of cranial lesion surgery using radiation over multiple sessions 77435

This procedure involves using targeted radiation to treat a lesion in the brain over several sessions. The radiation destroys the abnormal cells, helping to control or eliminate the lesion. It's a non-invasive treatment, meaning no surgical cuts are made.

12 services12 patients

Hospital Affiliations CMS Care Compare 5

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

Advocate Sherman Hospital

Acute Care Hospitals · Elgin, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140030

Location1425 North Randall RoadElgin, IL 60123 · Kane County

Emergency services Birthing friendly

Presence Saint Joseph Hospital - Elgin

Acute Care Hospitals · Elgin, IL

3/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140217

Location77 N Airlite StreetElgin, IL 60123 · Kane County

Emergency services

Alexian Brothers Medical Center 1

Acute Care Hospitals · Elk Grove Village, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140258

Location800 Biesterfield RdElk Grove Village, IL 60007 · Cook County

Emergency services Birthing friendly

Advocate Good Samaritan Hospital

Acute Care Hospitals · Downers Grove, IL

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140288

Location3815 Highland AvenueDowners Grove, IL 60515 · Du Page County

Emergency services Birthing friendly

St Alexius Medical Center

Acute Care Hospitals · Hoffman Estates, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140290

Location1555 N Barrington RdHoffman Estates, IL 60169 · Cook County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60007 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

$183.39 typical visit price

range $60.08 – $183.39

Typical copayment $45.84 (range $15.02 – $45.84)

Most-billed visit code 99205

Established Patient

$74.80 typical visit price

range $18.97 – $148.12

Typical copayment $18.70 (range $4.74 – $37.03)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

94.1/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

82.59

Promoting Interoperability

100

Improvement Activities

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 Alexander Harris's NPI number?

The NPI number for Alexander Harris is 1700236635. It was assigned to this individual provider in the NPPES registry on June 22, 2016.

Where is Alexander Harris located?

Alexander Harris practices at 800 Biesterfield Rd Ste 110, Elk Grove Village, IL 60007. The listed phone number is (847) 981-5760.

What is Alexander Harris's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Is Alexander Harris enrolled in Medicare?

Yes. Alexander Harris 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 organization bills Medicare for Alexander Harris's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Harris reassigns Medicare benefits to Radiation Oncology Consultants, Ltd (Oak Brook, IL). The 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 Alexander Harris's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Alexander Harris accept?

Health plans from Ambetter Health and Oscar Health list Alexander Harris 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 Alexander Harris affiliated with any hospitals?

According to CMS data, Alexander Harris is affiliated with Advocate Sherman Hospital, Presence Saint Joseph Hospital - Elgin, Alexian Brothers Medical Center 1, Advocate Good Samaritan Hospital and St Alexius Medical Center.

When was this NPI record last updated?

The NPPES record for Alexander Harris was last updated on August 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.