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Nicole Marie Grennell , FNP-C

Nurse Practitioner โ€ข Ann Arbor, MI

Active NPI 1699322909 Individual Practitioner Female Practitioner Accepts Medicare assignment
Practice location in NPPES

1500 E Medical Center Dr
Ann Arbor, MI 481095000

Call 7349364000 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

1500 E Medical Center Dr

Ann Arbor, MI 481095000

Telephone 7349364000
Organization at the Same NPPES Address or Phone

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

NPPES lists 1 additional practice-address record in Lansing, MI. See the list

Source: CMS NPPES NPI Registry, practice location records; release date unavailable.

CMS Doctors and Clinicians lists 1 group name: Regents Of The University Of Michigan. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Graduation Year

2019

Medicare-allowed amount

About $2,544 in 2021

The total amount Medicare approved for these services in 2021. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider and Service, 2021.

Paid by Medicare

About $2,036 in 2021

The part of the Medicare-allowed amount that Medicare itself paid in 2021, after patients' deductibles and coinsurance.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider and Service, 2021.

30-day fills

316 standardized 30-day fills in 2022

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$16,599 in 2022

The total cost of these prescriptions in 2022, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers โ€“ by Provider and Drug, 2022.

Open Payments general payments, program year 2024

All general payments: $167.77 across 3 records.

By nature of payment

  • Food and Beverage: $154.27 across 2 records.
  • Education: $13.50 across 1 record.

Reporting-company totals

  • ZOLL Services LLC (A/K/A ZOLL LifeCor Corp): $97.98 across 1 record.
  • Medtronic, Inc.: $69.79 across 2 records.

A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2024 (published June 30, 2026).

Guide: How to read an Open Payments record

Years since graduation

7 years (graduated 2019)

CMS Doctors and Clinicians data list 2019 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2019

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, โ€œDoes your provider accept Medicare as full payment?โ€

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Nicole Grennell has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Nicole Grennell as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Ann Arbor and Michigan

Billing and prescribing volume is not a quality rating.

Medicare Part B

Comparisons use 2024 data. The latest CMS data for Nicole Grennell are from 2021.

Medicare Part D

Comparisons use 2024 data. The latest CMS data for Nicole Grennell are from 2022.

704 active clinicians are listed under Nurse Practitioner with a practice address in Ann Arbor, MI (3,576 in Michigan).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Ann Arbor

19.2% of these 704 clinicians have the CMS telehealth indicator.

45.5% of these 704 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2021), CMS Medicare Part D Prescribers (2022), CMS Open Payments (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo ยท Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments ยท Program Year 2024
Disclosure Year:

Program year 2024 (payments made January 1 โ€“ December 31, 2024): fewer than 11 records totaling $167.77.

Manufacturer Payment Nature Product Type Amount ($)
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
Food and Beverage
Cash or cash equivalent
LifeVest General $97.98
Medtronic, Inc.
Food and Beverage
In-kind items and services
MICRA General $56.29
Medtronic, Inc.
Education
In-kind items and services
โ€” General $13.50

Source: CMS Open Payments, program year 2024, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2021.

CMS Part B ยท Data Year 2021

CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2020 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ€“ by Provider and Service data, 2021; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only
39 32 $28.44 $6.95
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
26 22 $115.31 $83.16
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only
16 13 $28.10 $6.95

Source: CMS Part B by Provider and Service, 2021; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2022.

CMS Part D ยท Data Year 2022
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Sucralfate Sucralfate 32 940 $882.89 32
Colchicine Colchicine 30 331 $424.44 29
Amiodarone Hcl Amiodarone Hcl 28 1,668 $674.25 18
Metoprolol Succinate Metoprolol Succinate 27 1,890 $487.52 14
Pantoprazole Sodium Pantoprazole Sodium 27 810 $174.87 27
Sotalol Sotalol Hcl 14 900 $343.86 โ€”
Diltiazem 24hr Er (Cd) Diltiazem Hcl 14 1,200 $853.92 โ€”
Xarelto Rivaroxaban 13 810 $12,736.16 โ€”
Cephalexin Cephalexin 11 35 $21.46 11

Source: CMS Part D by Provider and Drug, 2022; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2023-04-07
Nurse Practitioner Primary Specialty

NUCC Taxonomy Code: 363L00000X

License # reported to NPPES MI 4704297246

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

Nurse Practitioner - Family

NUCC Taxonomy Code: 363LF0000X

License # reported to NPPES MI 4704297246
Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Michigan Department of Licensing and Regulatory Affairs.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - NURSE PRACTITIONER

Medicare Enrollment ID

I20200108002245

Enrollment State Jurisdiction

MI

PECOS Control ID

5395170914

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Regents Of The University Of Michigan

1500 E Medical Ctr Dr, Ann Arbor, MI 481095000

Phone: 7349364000

Secondary Practice Locations

401 W Greenlawn Ave

Lansing, MI 489102819

Phone: 5179756000

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

34 listed
Dr. Patrick Albus , MD

Radiology - Diagnostic Radiology

NPI 1003828922

Doctor of Medicine (M.D.)

Dr. Lawrence An , MD

Internal Medicine

NPI 1003850611

Doctor of Medicine (M.D.)

Dr. Raya Bani Kenana , MD

Internal Medicine

NPI 1003476045

Doctor of Medicine (M.D.)

Denise Berry , CRNA

Nurse Anesthetist, Certified Registered

NPI 1003128356

Certified Registered Nurse Anesthetist

Dr. Ajay Bhasin , MD

Internal Medicine

NPI 1003179912

Doctor of Medicine (M.D.)

Dr. Anne Carlton , MD

Internal Medicine - Rheumatology

NPI 1003436031

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

8 Historical Events
๐Ÿ“
Updated Practice Location April 07, 2023

Registered at 1500 E MEDICAL CENTER DR, ANN ARBOR, MI 481095000 (Tel: 7349364000)

๐Ÿ“
Updated Business Mailing Address April 07, 2023

Registered at 3621 S STATE ST, ANN ARBOR, MI 481081633 (Tel: 7346475299)

โœ…
NPI Profile Active August 21, 2019

NPI status registered as active in NPPES database

๐Ÿ“
Practice Location (Initial Record) August 21, 2019

Registered at 401 W GREENLAWN AVE, LANSING, MI 489102819 (Tel: 5179756000)

๐Ÿ“
Business Mailing Address (Initial Record) August 21, 2019

Registered at 401 W GREENLAWN AVE, LANSING, MI 489102819

๐Ÿ‘ค
Provider Name / Credentials (Initial Record) August 21, 2019

Recorded as NICOLE GRENNELL, FNP-C

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) August 21, 2019

Nurse Practitioner (license number reported to NPPES: MI 4704297246)

๐ŸŸข
Initial NPI Registration & Enumeration August 21, 2019

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1699322909
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: August 21, 2019
Last Update: April 07, 2023
Sole Proprietor: No

Other Nurse Practitioners in Ann Arbor

All Nurse Practitioners in Ann Arbor

Mailing Address

3621 S State St

Ann Arbor, MI 481081633

Phone: 7346475299

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.