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MRS. BLAKE RAINIE SLACK CNM, WHNP
NPI 1003055591
Advanced Practice Midwife in Boston, MA

Active since February 07, 2009PECOS EnrolledAccepts Medicare Assignment
55 FRUIT ST, FOUNDERS 454, MASSACHUSETTS GENERAL HOSPITAL, BOSTON, MA 02114(617) 726-2033 Get Directions Write a Review

NPPES record last updated: April 28, 2016. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Mrs. Blake Rainie Slack Cnm, Whnp NPPES

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

MRS. BLAKE RAINIE SLACK CNM, WHNP (NPI 1003055591) is an individual advanced practice midwife in Boston, Massachusetts, licensed in Massachusetts (RN283129) and active in the NPI registry since February 2009. She is enrolled in Medicare PECOS and is a graduate of Other (2008).

NPPES Registry Identity

NPI1003055591
Entity TypeIndividualFemale
Primary Taxonomy367A00000X
Provider Legal NameMRS. BLAKE RAINIE SLACKCredential: CNM, WHNP
Location Address55 FRUIT ST, FOUNDERS 454, MASSACHUSETTS GENERAL HOSPITALBoston, MA 02114-2621
Mailing Address55 Fruit St, Founders 454, Massachusetts General HospitalBoston, MA 02114-2621 · (617) 726-2033
Phone(617) 726-2033
Sole ProprietorNo
Medical School CMSOtherGraduated 2008
Enumeration DateFebruary 7, 2009
Last NPPES UpdateApril 28, 2016
✔ NPI 1003055591 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyAdvanced Practice MidwifePhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code367A00000X
License✔ Licensed in MA · RN283129
Definition
Advanced practice midwifery encompasses the independent provision of care during pregnancy, childbirth, and the postpartum period; sexual and reproductive health; gynecologic health; and family planning services, including preconception care. Midwives also provide primary care for individuals from adolescence throughout the lifespan as well as care for the healthy newborn during the first 28 days of life. Midwives provide initial and ongoing comprehensive assessment, diagnosis, and treatment. Midwifery care includes health promotion, disease prevention, risk assessment and management, and individualized wellness education and counseling. Source: American College of Nurse-Midwives, www.midwife.org Additional Resources: See the American College of Nurse-Midwives, www.midwife.org, for more information on Certified Nurse-Midwives, Certified Midwives, the American Midwifery Certification Board (AMCB), and licensure.
Also ListedMidwifeTaxonomy 176B00000X · License AC000650 (MD), 283129 (MA)
Also ListedNurse Practitioner · Women's HealthTaxonomy 363LW0102X · License RN283129 (MA)
55 FRUIT ST, FOUNDERS 454, Boston, MA 02114
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Other Names 1

Former Name (1)Ms. Blake Elizabeth Rainie Cnm, Whnp

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

Mrs. Blake Rainie Slack Cnm, Whnp 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 ID7315097417
PECOS Enrollment IDI20130523000626
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02114 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
$78.84 typical visit price
range $21.07 – $155.29
Typical copayment $19.71 (range $5.26 – $38.82)
Most-billed visit code 99213
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 Blake Slack's NPI number?

The NPI number for Blake Slack is 1003055591. It was assigned to this individual provider in the NPPES registry on February 7, 2009. The provider is also known as Ms. Blake Elizabeth Rainie Cnm, Whnp.

Where is Blake Slack located?

Blake Slack practices at 55 Fruit St, Founders 454 Massachusetts General Hospital, Boston, MA 02114. The listed phone number is (617) 726-2033.

What is Blake Slack's specialty?

The primary specialty registered for this NPI is Advanced Practice Midwife with taxonomy code 367A00000X.

Is Blake Slack enrolled in Medicare?

Yes. Blake Slack 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 Blake Slack accept?

Health plans from Anthem Blue Cross and Blue Shield list Blake Slack 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 Blake Slack was last updated on April 28, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.