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MILDRED OCHISO OTSIENO
NPI 1649147380
Nurse Practitioner - Psychiatric/Mental Health in Middleboro, MA

Active since October 18, 2025PECOS EnrolledAccepts Medicare Assignment
52 OAK ST, MIDDLEBORO, MA 02346(508) 923-5300 Get Directions Write a Review

NPPES record last updated: August 11, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mildred Ochiso Otsieno NPPES

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

MILDRED OCHISO OTSIENO (NPI 1649147380) is an individual psychiatric/mental health provider in Middleboro, Massachusetts, licensed in Massachusetts (RN272235) and active in the NPI registry since October 2025. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2025).

NPPES Registry Identity

NPI1649147380
Entity TypeIndividualFemale
Primary Taxonomy363LP0808X
Provider Legal NameMILDRED OCHISO OTSIENO
Location Address52 OAK STMiddleboro, MA 02346-2078
Mailing Address960 Massachusetts Ave Ste 2Boston, MA 02118-2690
Phone(508) 923-5300
Sole ProprietorNo
Medical School CMSOtherGraduated 2025
Enumeration DateOctober 18, 2025
Last NPPES UpdateAugust 11, 2026
NPPES CertifiedAugust 11, 2026
✔ NPI 1649147380 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in MA · RN272235
52 OAK ST, Middleboro, MA 02346
Open in Google Maps ↗

Secondary Practice Locations 2

Location 1235 N Pearl StBrockton, MA 02301-1794 · Phone (508) 427-3000
Location 2736 Cambridge StBrighton, MA 02135-2907 · Phone (617) 789-2102

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Harvard Pilgrim Health Care.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mildred Ochiso Otsieno 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 ID5294203121
PECOS Enrollment IDI20260508000691
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.

Medicare Billing Reassignments

2

Medicare enrollment records show Mildred Otsieno reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Bmc Affiliated Physicians, Inc.
31 mi
Internal Medicine
1 BOSTON MEDICAL CENTER PLACE
Boston, MA 02118
  • Reassigned Medicare billing, Massachusetts enrollment
  • 716 clinicians in this Medicare group
NPI 1245320910 (617) 789-3000
The Mclean Hospital Corporation
37 mi
Psychiatry
115 MILL ST
Belmont, MA 02478
  • Reassigned Medicare billing, Massachusetts enrollment
  • 422 clinicians in this Medicare group
NPI 1114979580 (617) 855-2183

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02346 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
$90.70 typical visit price
range $58.86 – $177.36
Typical copayment $22.67 (range $14.71 – $44.34)
Most-billed visit code 99203
Established Patient
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
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 20

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

NICOLE FINCH
Counselor (Addiction (Substance Use Disorder))
52 OAK ST
MIDDLEBORO, MA 02346
Plymouth County (774) 213-8448
SUZANNE MARIE GOMEZ
Counselor (Addiction (Substance Use Disorder))
52 OAK ST
MIDDLEBORO, MA 02346
Plymouth County (774) 213-8448
DR. TERRANCE MATTHEW DOLAN
Psychiatry & Neurology (Psychiatry)
52 OAK ST
MIDDLEBORO, MA 02346
Plymouth County (508) 923-5426
SERENA MAINIERO
Student in an Organized Health Care Education/Training Program
52 OAK ST
MIDDLEBORO, MA 02346
Plymouth County (508) 923-5300
CHRISTINE MURPHY BURRIS
Counselor
52 OAK ST
MIDDLEBORO, MA 02346
Plymouth County (774) 213-8337
RAE-ANNA MUISE PMHNP
Nurse Practitioner (Psychiatric/Mental Health)
52 OAK ST
MIDDLEBORO, MA 02346
Plymouth County (508) 923-5462
SARAH MARIE DIONNE LICSW
Social Worker (Clinical)
52 OAK ST
MIDDLEBORO, MA 02346
Plymouth County (207) 333-8521
DHANATCHA SADETAPORN MD
Psychiatry & Neurology (Psychiatry)
52 OAK ST
MIDDLEBORO, MA 02346
Plymouth County (508) 923-5300

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 Mildred Otsieno's NPI number?

The NPI number for Mildred Otsieno is 1649147380. It was assigned to this individual provider in the NPPES registry on October 18, 2025.

Where is Mildred Otsieno located?

Mildred Otsieno practices at 52 Oak St, Middleboro, MA 02346. The listed phone number is (508) 923-5300.

What is Mildred Otsieno's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Mildred Otsieno enrolled in Medicare?

Yes. Mildred Otsieno 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.

Which organizations bill Medicare for Mildred Otsieno's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mildred Otsieno reassigns Medicare benefits to 2 organizations: Bmc Affiliated Physicians, Inc. (Boston, MA) and The Mclean Hospital Corporation (Belmont, MA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mildred Otsieno's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mildred Otsieno accept?

Health plans from Harvard Pilgrim Health Care list Mildred Otsieno 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 Mildred Otsieno was last updated on August 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.