MARY GREENWALT
NPI 1417475450
Nurse Practitioner - Family in Greenfield, IN

Active since August 30, 2017PECOS EnrolledAccepts Medicare Assignment
300 E BOYD AVE STE 201, GREENFIELD, IN 46140(317) 462-5112 Get Directions Write a Review

NPPES record last updated: January 29, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jan 29, 2026, Feb 20, 2023, Jun 11, 2021 and 2 more (5 updates tracked since 2017).

About Mary Greenwalt NPPES

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

MARY GREENWALT (NPI 1417475450) is an individual family provider in Greenfield, Indiana, licensed in Indiana (71007479A) and active in the NPI registry since August 2017. She is enrolled in Medicare PECOS, is affiliated with Reid Health, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1417475450
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMARY GREENWALT
Location Address300 E BOYD AVE STE 201Greenfield, IN 46140-2818
Mailing Address1100 Reid PkwyRichmond, IN 47374-1157 · (765) 983-3127 · Fax (654) 983-3219
Sole ProprietorNo
Medical School CMSIndiana University School Of MedicineGraduated 2017
Enumeration DateAugust 30, 2017
Last NPPES UpdateJanuary 29, 20265 updates tracked since enumeration
NPPES CertifiedJanuary 29, 2026
NPI 1417475450 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License Licensed in IN · 71007479A
Also ListedRegistered NurseTaxonomy 163W00000X · License 28145063A (IN)
300 E BOYD AVE STE 201, Greenfield, IN 46140

Secondary Practice Locations 2

Location 11100 Reid Pkwy Ste 215Richmond, IN 47374-1157 · Phone (765) 939-9331 · Fax (765) 939-9314
Location 21400 N Ritter Ave Ste 520Indianapolis, IN 46219-3052 · Phone (317) 355-1234

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Mary Greenwalt 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 ID8921372699
PECOS Enrollment IDI20170919001538
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.

Areas of Expertise CMS Part B claims 2

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.

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.
140 services112 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.
40 services37 patients

Hospital Affiliations CMS Care Compare

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

Reid Health

Acute Care Hospitals · Richmond, IN
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number150048
Location1100 Reid PkwyRichmond, IN 47374 · Wayne County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 46140 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
$82.04 typical visit price
range $53.07 – $161.76
Typical copayment $20.51 (range $13.26 – $40.44)
Most-billed visit code 99203
Established Patient
$94.22 typical visit price
range $16.93 – $132.22
Typical copayment $23.55 (range $4.23 – $33.05)
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 8

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Internal Medicine (Cardiovascular Disease)
300 E BOYD AVE STE 201
GREENFIELD, IN 46140
Internal Medicine (Interventional Cardiology)
300 E BOYD AVE STE 201
GREENFIELD, IN 46140
Internal Medicine (Interventional Cardiology)
300 E BOYD AVE STE 201
GREENFIELD, IN 46140
Internal Medicine (Interventional Cardiology)
300 E BOYD AVE STE 201
GREENFIELD, IN 46140
Internal Medicine (Cardiovascular Disease)
300 E BOYD AVE STE 201
GREENFIELD, IN 46140
Nurse Practitioner (Family)
300 E BOYD AVE STE 201
GREENFIELD, IN 46140
Internal Medicine (Cardiovascular Disease)
300 E BOYD AVE STE 201
GREENFIELD, IN 46140
Internal Medicine (Cardiovascular Disease)
300 E BOYD AVE STE 201
GREENFIELD, IN 46140

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 Mary Greenwalt's NPI number?

The NPI number for Mary Greenwalt is 1417475450. It was assigned to this individual provider in the NPPES registry on August 30, 2017.

Where is Mary Greenwalt located?

Mary Greenwalt practices at 300 E Boyd Ave Ste 201, Greenfield, IN 46140. The listed phone number is (317) 462-5112.

What is Mary Greenwalt's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Mary Greenwalt enrolled in Medicare?

Yes. Mary Greenwalt 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.

What insurance does Mary Greenwalt accept?

Health plans from Anthem Blue Cross and Blue Shield and CareSource list Mary Greenwalt 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 Mary Greenwalt affiliated with any hospitals?

According to CMS data, Mary Greenwalt is affiliated with Reid Health.

When was this NPI record last updated?

The NPPES record for Mary Greenwalt was last updated on January 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.