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DR. SARAH CATHLEEN PETERSON M.D.
NPI 1114174828
Allergy & Immunology in Buffalo Grove, IL

Active since August 25, 2008PECOS EnrolledAccepts Medicare Assignment
89.66/100
CMS Quality Rating
15 S MCHENRY RD, BUFFALO GROVE, IL 60089(847) 618-0326(847) 618-0762 Get Directions Write a Review

NPPES record last updated: April 28, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 28, 2026, Oct 5, 2021, May 10, 2021 and 1 more (4 updates tracked since 2020).

About Dr. Sarah Cathleen Peterson M.d. NPPES

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

DR. SARAH CATHLEEN PETERSON M.D. (NPI 1114174828) is an individual allergy & immunology provider in Buffalo Grove, Illinois, licensed in Illinois (036125565) and active in the NPI registry since August 2008. She is enrolled in Medicare PECOS, is affiliated with Northwest Community Hospital 1, and is a graduate of University Of Rochester School Of Medicine And Dentistry (2007).

NPPES Registry Identity

NPI1114174828
Entity TypeIndividualFemale
Primary Taxonomy207K00000X
Provider Legal NameDR. SARAH CATHLEEN PETERSONCredential: M.D.
Location Address15 S MCHENRY RDBuffalo Grove, IL 60089-6705
Mailing Address15 S Mchenry RdBuffalo Grove, IL 60089-6705 · (847) 618-0326 · Fax (847) 618-0762
Phone(847) 618-0326
Fax(847) 618-0762
Sole ProprietorNo
Medical School CMSUniversity Of Rochester School Of Medicine And DentistryGraduated 2007
Enumeration DateAugust 25, 2008
Last NPPES UpdateApril 28, 20264 updates tracked since enumeration
NPPES CertifiedApril 28, 2026
✔ NPI 1114174828 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAllergy & ImmunologyAllopathic & Osteopathic Physicians
Taxonomy Code207K00000X
License✔ Licensed in IL · 036125565
Definition
An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.
Also ListedInternal MedicineTaxonomy 207R00000X · License 036125565 (IL)
15 S MCHENRY RD, Buffalo Grove, IL 60089
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware.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. Sarah Cathleen Peterson 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 ID2163616004
PECOS Enrollment IDI20101104000389
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 Sarah Peterson reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Northwest Community Health Services Inc
5.5 mi
Internal Medicine
3040 W SALT CREEK LN
Arlington Heights, IL 60005
  • Reassigned Medicare billing, Illinois enrollment
  • 346 clinicians in this Medicare group
NPI 1134433154 (847) 618-3481
Endeavor Health Medical Group
15 mi
Anesthesiology
2650 RIDGE AVE, ANESTHESIOLOGY ROOM 3905
Evanston, IL 60201
  • Reassigned Medicare billing, Illinois enrollment
  • 4,841 clinicians in this Medicare group
NPI 1265695944 (847) 570-2760
Northwestern Medical Faculty Foundation
17 mi
Multi-Specialty
DEPT 5777
Carol Stream, IL 60122
  • Reassigned Medicare billing, Illinois enrollment
  • 4,817 clinicians in this Medicare group
NPI 1346235314 (855) 694-2866

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 9

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.

Test for allergy using allergenic extract 95004
An allergy test with allergenic extract is a diagnostic method to identify substances causing allergic reactions. Small amounts of common allergens are introduced to your body, usually through skin pricks or blood tests. Your body's response helps determine your allergies.
1,461 services45 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.
231 services134 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.
94 services80 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
52 services52 patients
Test to measure expiratory airflow and volume 94010
This test, known as spirometry, assesses how well your lungs work. It measures how much air you can inhale, how much you can exhale and how quickly you can exhale. It's non-invasive and helps diagnose conditions like asthma or COPD.
40 services28 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.
37 services37 patients

Hospital Affiliations CMS Care Compare

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

Northwest Community Hospital 1

Acute Care Hospitals · Arlington Heights, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140252
Location800 W Central RoadArlington Heights, IL 60005 · Cook County
Emergency services Birthing friendly

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.

89.66/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality79.32
Promoting Interoperability100
Improvement Activities40

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. CHRISTIAN A DANIELS M.D.
Family Medicine
15 S MCHENRY RD
BUFFALO GROVE, IL 60089
Lake County (847) 618-0351
DR. DANIEL B CACIOPPO MD
Psychiatry & Neurology (Neurology)
15 S MCHENRY RD
BUFFALO GROVE, IL 60089
Lake County (847) 618-0326
DR. CHUCK RICHARD VRASICH MD
Internal Medicine
15 S MCHENRY RD
BUFFALO GROVE, IL 60089
Lake County (847) 618-0351
DR. GEORGE T. THOTT M.D
Internal Medicine (Endocrinology, Diabetes & Metabolism)
15 S MCHENRY RD
BUFFALO GROVE, IL 60089
Lake County (847) 618-0326
REBECCA A GRIESEMER PA-C
Physician Assistant
15 S MCHENRY RD
BUFFALO GROVE, IL 60089
Lake County (847) 618-0351
DR. SUSAN E NELSON M.D.
Internal Medicine
15 S MCHENRY RD
BUFFALO GROVE, IL 60089
Lake County (847) 618-0351
DR. IRINA GOLDVEKHT D.O.
Internal Medicine
15 S MCHENRY RD
BUFFALO GROVE, IL 60089
Lake County (847) 618-0351
KRISTIN HORNADAY PA-C
Physician Assistant
15 S MCHENRY RD
BUFFALO GROVE, IL 60089
Lake County (847) 618-0351

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 Sarah Peterson's NPI number?

The NPI number for Sarah Peterson is 1114174828. It was assigned to this individual provider in the NPPES registry on August 25, 2008.

Where is Sarah Peterson located?

Sarah Peterson practices at 15 S Mchenry Rd, Buffalo Grove, IL 60089. The listed phone number is (847) 618-0326.

What is Sarah Peterson's specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

Is Sarah Peterson enrolled in Medicare?

Yes. Sarah Peterson 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 Sarah Peterson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sarah Peterson reassigns Medicare benefits to 3 organizations: Northwest Community Health Services Inc (Arlington Heights, IL), Endeavor Health Medical Group (Evanston, IL) and Northwestern Medical Faculty Foundation (Carol Stream, IL). 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 Sarah Peterson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sarah Peterson accept?

Health plans from Ambetter Health and Ambetter Health of Delaware list Sarah Peterson 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 Sarah Peterson affiliated with any hospitals?

According to CMS data, Sarah Peterson is affiliated with Northwest Community Hospital 1.

When was this NPI record last updated?

The NPPES record for Sarah Peterson was last updated on April 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.