Sheila Marcellus, PMHNP-BC
NPI 1043736523 · Psychiatric/Mental Health Nurse Practitioner · Braintree, MA
Enrolled with Medicare as Practitioner - Certified Clinical Nurse Specialist (cns) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sheila Marcellus, PMHNP-BC is a Psychiatric/Mental Health Nurse Practitioner provider in Braintree, MA (NPI 1043736523).
Provider details
- NPI number
- 1043736523
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PMHNP-BC
- Sex
- Female
- Sole proprietor
- Yes
- License
- 237861 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
- Behavior Analyst103K00000X
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
8 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
357 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 157 | $62 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 106 | $113 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 70 | $161 |
| Psychotherapy With Evaluation and Management Visit, 45 Minutes90836 | 24 | $81 |
Typical Medicare-allowed amounts for these services range $62–$161 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Buspirone Hcl | 81 | 15 |
| Escitalopram Oxalate | 65 | 17 |
| Bupropion Hclbrand: Bupropion Xl | 37 | 11 |
| Sertraline Hcl | 25 | — |
| Clonazepam | 23 | — |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 23 | — |
| Methylphenidate Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$369 across 9 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-08-16
- Last updated
- 2025-09-12
- Certified
- 2025-09-12
Frequently asked questions
- What is Sheila Marcellus's NPI number?
- Sheila Marcellus's National Provider Identifier (NPI) is 1043736523, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sheila Marcellus's specialty?
- Sheila Marcellus is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sheila Marcellus located?
- Sheila Marcellus's practice location on file with NPPES is 150 Grossman Dr Ste 205, Braintree, MA 02184-4947.
- What is Sheila Marcellus's phone number?
- The practice phone number listed in the NPPES registry for Sheila Marcellus is (781) 285-5767.
- Does Sheila Marcellus accept Medicare?
- Sheila Marcellus is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sheila Marcellus's NPI active?
- Yes — Sheila Marcellus's NPI (1043736523) is active in the NPPES registry as of the last update on 2025-09-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.