MELISSA LEEANN GREYWITT FNP
NPI 1821629494
Nurse Practitioner in Signal Mountain, TN

Q: What is Melissa Greywitt's NPI number?

The NPI number for Melissa Greywitt is 1821629494. It was assigned to this individual provider in the NPPES registry on January 31, 2020.

Q: What is Melissa Greywitt's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Q: When was this NPI record last updated?

The NPPES record for Melissa Greywitt was last updated on July 19, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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 January 31, 2020PECOS Enrolled

501 JAMES BLVD, SIGNAL MOUNTAIN, TN 37377(305) 923-2309 Get Directions Write a Review

NPPES record last updated: July 19, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 19, 2022, Jan 31, 2020 (2 updates tracked since 2020).

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About Melissa Leeann Greywitt Fnp NPPES

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

MELISSA LEEANN GREYWITT FNP (NPI 1821629494) is an individual nurse practitioner in Signal Mountain, Tennessee, licensed in Tennessee (F01201915) and active in the NPI registry since January 2020. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1821629494

Entity TypeIndividualFemale

Primary Taxonomy363L00000X

Provider Legal NameMELISSA LEEANN GREYWITTCredential: FNP

Location Address501 JAMES BLVDSignal Mountain, TN 37377-2219

Mailing Address501 James BlvdSignal Mountain, TN 37377-2219 · (305) 923-2309

Phone(305) 923-2309

Sole ProprietorYes

Enumeration DateJanuary 31, 2020

Last NPPES UpdateJuly 19, 20222 updates tracked since enumeration

NPPES CertifiedJuly 19, 2022

✔ NPI 1821629494 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363L00000X

License✔ Licensed in TN · F01201915

Definition

(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.

Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X · License 27221 (TN)

501 JAMES BLVD, Signal Mountain, TN 37377

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Other Identifiers 1

Other0000TN · Na

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Cigna Healthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Melissa Leeann Greywitt Fnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

Medicare enrollment records show Melissa Greywitt reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Chattanooga Hamilton County Hospital Authority

6.4 mi

Internal Medicine

975 E 3RD ST
Chattanooga, TN 37403

Reassigned Medicare billing, Tennessee enrollment
533 clinicians in this Medicare group

NPI 1407034028 (423) 266-1490

Signify Health Medical Associates, PLLC

676 mi

General Practice

4055 VALLEY VIEW LN STE 700
Dallas, TX 75244

Reassigned Medicare billing, Tennessee enrollment
528 clinicians in this Medicare group

NPI 1750845863 (972) 715-3800

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 5

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.

Automated urinalysis test 81003

An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.

68 services35 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.

64 services34 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

37 services33 patients

Blood glucose (sugar) test performed by hand-held instrument 82962

A blood glucose test uses a handheld device to measure the amount of sugar in your blood. A small prick on your finger allows a drop of blood to be placed on a test strip, which is then read by the device. This helps monitor and manage diabetes effectively.

32 services16 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.

31 services24 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37377 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

$81.53 typical visit price

range $52.64 – $160.89

Typical copayment $20.38 (range $13.16 – $40.22)

Most-billed visit code 99203

Established Patient

$93.60 typical visit price

range $16.72 – $131.41

Typical copayment $23.40 (range $4.18 – $32.85)

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.

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 Melissa Greywitt's NPI number?

The NPI number for Melissa Greywitt is 1821629494. It was assigned to this individual provider in the NPPES registry on January 31, 2020.

Where is Melissa Greywitt located?

Melissa Greywitt practices at 501 James Blvd, Signal Mountain, TN 37377. The listed phone number is (305) 923-2309.

What is Melissa Greywitt's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Melissa Greywitt enrolled in Medicare?

Yes. Melissa Greywitt is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Melissa Greywitt's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Melissa Greywitt reassigns Medicare benefits to 2 organizations: Chattanooga Hamilton County Hospital Authority (Chattanooga, TN) and Signify Health Medical Associates, PLLC (Dallas, TX). 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 Melissa Greywitt's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Melissa Greywitt accept?

Health plans from Cigna Healthcare list Melissa Greywitt 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.

When was this NPI record last updated?

The NPPES record for Melissa Greywitt was last updated on July 19, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.