MS. MELISSA ANN RITZEN NP-C
NPI 1770933780
Nurse Practitioner - Family in Tucson, AZ

Q: What is Melissa Ritzen's NPI number?

The NPI number for Melissa Ritzen is 1770933780. It was assigned to this individual provider in the NPPES registry on June 21, 2016.

Q: What is Melissa Ritzen's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Melissa Ritzen was last updated on August 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.

Active since June 21, 2016PECOS Enrolled

5983 E GRANT RD STE 101, TUCSON, AZ 85712(520) 420-1966(866) 733-1907 Get Directions Write a Review

NPPES record last updated: August 9, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Aug 9, 2026, Jan 15, 2026, Feb 24, 2017 and 1 more (4 updates tracked since 2016).

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About Ms. Melissa Ann Ritzen Np-c NPPES

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

MS. MELISSA ANN RITZEN NP-C (NPI 1770933780) is an individual family provider in Tucson, Arizona, licensed in Arizona (AP8795) and active in the NPI registry since June 2016. She is enrolled in Medicare PECOS and maintains a secondary practice location in Tucson.

NPPES Registry Identity

NPI1770933780

Entity TypeIndividualFemale

Primary Taxonomy363LF0000X

Provider Legal NameMS. MELISSA ANN RITZENCredential: NP-C

Location Address5983 E GRANT RD STE 101Tucson, AZ 85712-2366

Mailing Address5983 E Grant Rd Ste 101, Suite 101Tucson, AZ 85712-2366 · (520) 420-1966 · Fax (866) 733-1907

Phone(520) 420-1966

Fax(866) 733-1907

Sole ProprietorNo

Enumeration DateJune 21, 2016

Last NPPES UpdateAugust 9, 20264 updates tracked since enumeration

NPPES CertifiedAugust 9, 2026

✔ NPI 1770933780 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 AZ · AP8795

Also ListedRegistered NurseTaxonomy 163W00000X · License RN140989 (AZ)

5983 E GRANT RD STE 101, Tucson, AZ 85712

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Secondary Practice Location 1

Location 115883 N Oracle Rd Ste 155Tucson, AZ 85739-9117 · Phone (520) 420-1966 · Fax (866) 733-1907

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter Health, Oscar Health Plan, Inc..Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Melissa Ann Ritzen Np-c 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 Ritzen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Arizona Physician Group PLLC

Same address

Internal Medicine

5983 E GRANT RD STE 101
Tucson, AZ 85712

Reassigned Medicare billing, Arizona enrollment
13 clinicians in this Medicare group

NPI 1578272555 (520) 420-1966

Sanova Urgent Care PLLC

17 mi

Urgent Care

15883 N ORACLE RD, SUITE 101, SUITE 155
Tucson, AZ 85739

Reassigned Medicare billing, Arizona enrollment
4 clinicians in this Medicare group

NPI 1144106451 (520) 232-2525

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85712 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

$85.89 typical visit price

range $55.44 – $168.60

Typical copayment $21.47 (range $13.86 – $42.15)

Most-billed visit code 99203

Established Patient

$98.00 typical visit price

range $17.72 – $137.41

Typical copayment $24.50 (range $4.43 – $34.35)

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.

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.

Reported Quality Measures

Care Plan

Percentage of patients aged 65 years and older who have an advance care plan or surrogate decision maker documented in the medical record that an advance care plan was discussed but the patient did not wish or was not able to name a surrogate decision maker…

100%136 patients5/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 9

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

SANOVA PODIATRY PLLC

Podiatrist