MELISSA ANN AYER CNP, RN
NPI 1770059248
Nurse Practitioner in Boston, MA

Q: What is Melissa Ayer's NPI number?

The NPI number for Melissa Ayer is 1770059248. It was assigned to this individual provider in the NPPES registry on October 22, 2018.

Q: What is Melissa Ayer'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 Ayer was last updated on November 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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 October 22, 2018PECOS EnrolledAccepts Medicare Assignment

55 FRUIT STREET, BOSTON, MA 02241(617) 726-9527 Get Directions Write a Review

NPPES record last updated: November 25, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Nov 25, 2025, Nov 13, 2019, Oct 1, 2019 and 1 more (4 updates tracked since 2018).

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About Melissa Ann Ayer Cnp, Rn NPPES

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

MELISSA ANN AYER CNP, RN (NPI 1770059248) is an individual nurse practitioner in Boston, Massachusetts, licensed in Massachusetts (RN237363) and active in the NPI registry since October 2018. She is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and is a graduate of Other (2018).

NPPES Registry Identity

NPI1770059248

Entity TypeIndividualFemale

Primary Taxonomy363L00000X

Provider Legal NameMELISSA ANN AYERCredential: CNP, RN

Location Address55 FRUIT STREETBoston, MA 02241-1909

Mailing AddressMassachusetts General Physicians Organization, 55 Fruit StreetBoston, MA 02241-9095 · (617) 724-5058

Phone(617) 726-9527

Sole ProprietorNo

Medical School CMSOtherGraduated 2018

Enumeration DateOctober 22, 2018

Last NPPES UpdateNovember 25, 20254 updates tracked since enumeration

NPPES CertifiedNovember 25, 2025

✔ NPI 1770059248 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 MA · RN237363

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 RN237363 (MA)

55 FRUIT STREET, Boston, MA 02241

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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

Melissa Ann Ayer Cnp, Rn 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 ID6709130776

PECOS Enrollment IDI20181109000336

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.

Hospital Affiliations CMS Care Compare 2

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

Massachusetts General Hospital

Acute Care Hospitals · Boston, MA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220071

Location55 Fruit StreetBoston, MA 02114 · Suffolk County

Emergency services Birthing friendly

Newton-Wellesley Hospital

Acute Care Hospitals · Newton, MA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220101

Location2014 Washington StreetNewton, MA 02462 · Middlesex County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02241 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

$97.64 typical visit price

range $63.72 – $189.86

Typical copayment $24.41 (range $15.93 – $47.46)

Most-billed visit code 99203

Established Patient

$111.18 typical visit price

range $21.07 – $155.29

Typical copayment $27.79 (range $5.26 – $38.82)

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.

Referred Medical Equipment & Supplies CMS DME claims 13

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Skin barrier; solid, 4 x 4 or equivalent; each A4362

DME-Orthotic Devices · category DF010N

5 suppliers20 claims540 services$2.53 avg. paid by Medicare

Ostomy belt, each A4367

DME-Orthotic Devices · category DF010N

3 suppliers12 claims14 services$6.57 avg. paid by Medicare

Ostomy skin barrier, solid 4 x 4 or equivalent, extended wear, without built-in convexity, each A4385

DME-Orthotic Devices · category DF010N

5 suppliers19 claims740 services$4.79 avg. paid by Medicare

Ostomy deodorant, with or without lubricant, for use in ostomy pouch, per fluid ounce A4394

DME-Orthotic Devices · category DF010N

4 suppliers19 claims656 services$2.33 avg. paid by Medicare

Ostomy skin barrier, pectin-based, paste, per ounce A4406

DME-Orthotic Devices · category DF010N

4 suppliers12 claims90 services$5.51 avg. paid by Medicare

Ostomy skin barrier, with flange (solid, flexible, or accordion), extended wear, with built-in convexity, 4 x 4 inches or smaller, each A4407

DME-Orthotic Devices · category DF010N

5 suppliers42 claims1,565 services$8.24 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 11

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

MICHAEL HAINES NP

Nurse Practitioner