Blake Slack, CNM, WHNP
Advanced Practice Midwife · Boston, MA
Blake Slack, CNM, WHNP is an advanced practice midwife with a practice address in Boston, Massachusetts, and NPI 1003055591, issued on Feb 7, 2009. Check the license (Massachusetts RN283129, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Blake Slack
- Credential
- CNM, WHNP
- Primary taxonomy
- Advanced Practice Midwife 367A00000X
- License numbers
- RN283129 MA
283129 MA
AC000650 MD
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fruit St, Founders 454, Boston, MA 02114
- Phone
- (617) 726-2033
- Enumerated
- Feb 7, 2009
- Entity
- Type 1 · individual
Verify Blake Slack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN283129Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
78% fewer Medicare Part D claims than the average advanced practice midwife in 2024
16 Medicare Part D claims, against an average of 72 among the 2,776 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Massachusetts General Physicians Organization IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Advanced Practice Midwife providers in Massachusetts
There are 454 advanced practice midwife records in Massachusetts.
Other advanced practice midwife records in Massachusetts
- Rachelle Aaron, CNMLowell, MA1407355878
- Mayssa Aboody, CNMBoston, MA1780455998
- Katherine AeschlimanChelmsford, MA1295755858
- Evelise Alicea, CNMBoston, MA1528761228
- Alexandra Allard, CNMSpringfield, MA1043943087
- Avery Allen, CNMSpringfield, MA1073019071
- Kimberly Alovisetti, CNMBoston, MA1407217581
- Debbie Ames, CNMWestfield, MA1104922905
- Jennifer Anderson, CNMNew Bedford, MA1346424058
- Susan Andrews, CNMBoston, MA1689693947
Common questions
What is Blake Slack, CNM, WHNP's NPI number?
Blake Slack, CNM, WHNP's National Provider Identifier (NPI) is 1003055591, issued on Feb 7, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Blake Slack, CNM, WHNP located?
The NPPES record lists a practice address at 55 Fruit St, Founders 454, Boston, MA, 02114. Phone: (617) 726-2033. Providers update this record themselves, so call before visiting.
How can I verify Blake Slack, CNM, WHNP's license?
NPPES lists Massachusetts license number RN283129, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Blake Slack, CNM, WHNP prescribe under Medicare Part D?
In 2024, Blake Slack, CNM, WHNP had 16 Medicare Part D claims; the average among advanced practice midwife prescribers was 72. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.