Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Ashima Mannan, NP

Individual provider Nurse Practitioner · NPI 1134538879

Ashima Mannan, NP is a Nurse Practitioner in Waltham, Massachusetts. Qualified in 2013, 13 years ago. Practices with Cambridge Public Health Commission, a 649-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
13
Licensed in
MA
In the registry since
2014
Specialties on file
2
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.

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Practice location Address checks out

128 Willow St
Waltham, MA 02453-8329 Not confirmed with CMS for 12 years — call before visiting
Phone: (617) 840-1845
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence 259466 (MA)
Gerontology Nurse Practitioner Taxonomy 363LG0600X · Licence 259466 (MA)

Record details

NPI number1134538879
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP
Sole proprietorYes
NPI enumeratedAugust 6, 2014
Last updated in NPPESAugust 6, 2014

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice Cambridge Public Health Commission — 649 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients47
Services billed 154 a service is one billed item, such as a visit, a test or a procedure
Average patient age84

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Cambridge Public Health Commission

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 649 clinicians in the practice; 12 are shown here.

Other providers in Waltham