MS. ADDIE F DAY RN, ANP-C
NPI 1104251602
Nurse Practitioner - Adult Health in Cambridge, MA

Q: What is Addie Day's NPI number?

The NPI number for Addie Day is 1104251602. It was assigned to this individual provider in the NPPES registry on September 4, 2013. The provider is also known as Addie F Schwarz.

Q: What is Addie Day's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.

Q: When was this NPI record last updated?

The NPPES record for Addie Day was last updated on March 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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 September 04, 2013PECOS EnrolledAccepts Medicare Assignment

625 MOUNT AUBURN ST STE 101A, CAMBRIDGE, MA 02138(617) 492-4545 Get Directions Write a Review

NPPES record last updated: March 7, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Ms. Addie F Day Rn, Anp-c NPPES

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

MS. ADDIE F DAY RN, ANP-C (NPI 1104251602) is an individual adult health provider in Cambridge, Massachusetts, licensed in Massachusetts (RN2277693) and active in the NPI registry since September 2013. She is enrolled in Medicare PECOS, is affiliated with Mount Auburn Hospital, and is a graduate of Other (2013).

NPPES Registry Identity

NPI1104251602

Entity TypeIndividualFemale

Primary Taxonomy363LA2200X

Provider Legal NameMS. ADDIE F DAYCredential: RN, ANP-C

Location Address625 MOUNT AUBURN ST STE 101ACambridge, MA 02138-4518

Mailing Address330 Mt Auburn St, Parsons 2Cambridge, MA 02138-5597 · (617) 492-4545

Phone(617) 492-4545

Sole ProprietorNo

Medical School CMSOtherGraduated 2013

Enumeration DateSeptember 4, 2013

Last NPPES UpdateMarch 7, 2025

NPPES CertifiedMarch 7, 2025

✔ NPI 1104251602 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyNurse Practitioner · Adult HealthPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LA2200X

License✔ Licensed in MA · RN2277693

Also ListedRegistered NurseTaxonomy 163W00000X · License RN2277693 (MA), 068485-21 (NH)

Also ListedNurse PractitionerTaxonomy 363L00000X · License RN2277693 (MA)

Also ListedNurse Practitioner · Primary CareTaxonomy 363LP2300X · License RN2277693 (MA)

625 MOUNT AUBURN ST STE 101A, Cambridge, MA 02138

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Other Names 1

Former Name (1)Addie F Schwarz

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.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

Ms. Addie F Day Rn, Anp-c 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 ID5092944918

PECOS Enrollment IDI20140218001122

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 7

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 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.

223 services164 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.

61 services53 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.

39 services38 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

13 services13 patients

Urinalysis, manual test 81002

A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.

12 services12 patients

Influenza vaccine split virus, preservative free 90662

The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.

11 services11 patients

Hospital Affiliations CMS Care Compare 2

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

Mount Auburn Hospital

Acute Care Hospitals · Cambridge, MA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220002

Location330 Mount Auburn StreetCambridge, MA 02138 · Middlesex County

Emergency services Birthing friendly

Beth Israel Deaconess Hospital - Needham

Acute Care Hospitals · Needham, MA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220083

Location148 Chestnut StreetNeedham, MA 02494 · Norfolk County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02138 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.

Other Providers at the Same Location NPPES

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

DR. RACHEL FREDA HAFT MD

Internal Medicine

625 MOUNT AUBURN ST STE 101A
CAMBRIDGE, MA 02138

Middlesex County (617) 492-4545

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 Addie Day's NPI number?

The NPI number for Addie Day is 1104251602. It was assigned to this individual provider in the NPPES registry on September 4, 2013. The provider is also known as Addie F Schwarz.

Where is Addie Day located?

Addie Day practices at 625 Mount Auburn St Ste 101A, Cambridge, MA 02138. The listed phone number is (617) 492-4545.

What is Addie Day's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.

Is Addie Day enrolled in Medicare?

Yes. Addie Day 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 Addie Day accept?

Health plans from Anthem Blue Cross and Blue Shield list Addie Day 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 Addie Day affiliated with any hospitals?

According to CMS data, Addie Day is affiliated with Mount Auburn Hospital and Beth Israel Deaconess Hospital - Needham.

When was this NPI record last updated?

The NPPES record for Addie Day was last updated on March 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.