What is Rebecca Griesemer's NPI number?

Rebecca Griesemer's National Provider Identifier (NPI) is 1134222425, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Rebecca Griesemer's specialty?

Rebecca Griesemer is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).

Where is Rebecca Griesemer located?

Rebecca Griesemer's practice location on file with NPPES is 15 S Mchenry Rd, Buffalo Grove, IL 60089-6705.

What is Rebecca Griesemer's phone number?

The practice phone number listed in the NPPES registry for Rebecca Griesemer is (847) 618-0351.

Does Rebecca Griesemer accept Medicare?

Rebecca Griesemer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Rebecca Griesemer's NPI active?

Yes — Rebecca Griesemer's NPI (1134222425) is active in the NPPES registry as of the last update on 2022-03-16.

IndividualActiveAccepts Medicare

Rebecca Griesemer, PA-C

NPI 1134222425 · Physician Assistant · Buffalo Grove, IL

Rebecca Griesemer, PA-C is a Physician Assistant provider in Buffalo Grove, IL (NPI 1134222425).

Provider details

NPI number: 1134222425
Entity type: Individual
Primary specialty: Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Credential: PA-C
Sex: Female
Sole proprietor: No
License: 085-002393 (IL)

Practice location

15 S Mchenry Rd

Buffalo Grove, IL 60089-6705

Phone: (847) 618-0351

Fax: (847) 618-0766

Street-level locationGet directions

More IL providers

Mailing address

15 S Mchenry Rd

Buffalo Grove, IL 60089-6705

Specialties & taxonomies

Physician AssistantPrimary363A00000XLicense 085-002393 (IL)
Physician Assistants & Advanced Practice Nursing Providers

Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(82/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure25% of score
20 yrs in NPPES registry
Profile completeness25% of score
100% of core fields populated
Practice footprint15% of score
1 documented practice location
Medicare service volume (vs. specialty peers)25% of score
551 Medicare services, 2024 (ranked within specialty)
Open Payments transparency10% of score
Has Open Payments disclosures (2024)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	200	$81
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	110	$114
Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439	53	$117
Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000	50	$13
Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212	40	$51
Detection Test By Multiplex Amplified Probe Technique for Severe Acute Respiratory Syndrome Coronavirus 2 (sars-Cov-2) (covid-19) and Influenza Virus Types a and B

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Methylprednisolone	43	43
Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro	17	17
Meloxicam	16	11
Rosuvastatin Calcium	15	—
Cefadroxil	13	13
Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass	11	11
Gabapentin	11	—

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$45 across 1 record (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2006-09-05
Last updated: 2022-03-16
Certified: 2022-03-16

Frequently asked questions

What is Rebecca Griesemer's NPI number?: Rebecca Griesemer's National Provider Identifier (NPI) is 1134222425, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Rebecca Griesemer's specialty?: Rebecca Griesemer is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
Where is Rebecca Griesemer located?: Rebecca Griesemer's practice location on file with NPPES is 15 S Mchenry Rd, Buffalo Grove, IL 60089-6705.
What is Rebecca Griesemer's phone number?: The practice phone number listed in the NPPES registry for Rebecca Griesemer is (847) 618-0351.
Does Rebecca Griesemer accept Medicare?: Rebecca Griesemer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Rebecca Griesemer's NPI active?: Yes — Rebecca Griesemer's NPI (1134222425) is active in the NPPES registry as of the last update on 2022-03-16.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	200	$81
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	110	$114
Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439	53	$117
Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000	50	$13
Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212	40	$51
Detection Test By Multiplex Amplified Probe Technique for Severe Acute Respiratory Syndrome Coronavirus 2 (sars-Cov-2) (covid-19) and Influenza Virus Types a and B

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Methylprednisolone	43	43
Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro	17	17
Meloxicam	16	11
Rosuvastatin Calcium	15	—
Cefadroxil	13	13
Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass	11	11
Gabapentin	11	—

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$45 across 1 record (Open Payments 2024)

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments