Maureen Callnan, PMHNP
NPI 1740332949 · Psychiatric/Mental Health Nurse Practitioner · Portland, ME
Enrolled with Medicare as Practitioner - Certified Clinical Nurse Specialist (cns) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maureen Callnan, PMHNP is a Psychiatric/Mental Health Nurse Practitioner provider in Portland, ME (NPI 1740332949).
Provider details
- NPI number
- 1740332949
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PMHNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- CNP111003 (ME)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
229 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 119 | $75 |
| Psychotherapy With Evaluation and Management Visit, 45 Minutes90836 | 110 | $75 |
Typical Medicare-allowed amounts for these services range $75–$75 (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 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lorazepam | 62 | — |
| Clonazepam | 51 | — |
| Alprazolam | 46 | — |
| Mirtazapine | 43 | 11 |
| Duloxetine Hcl | 38 | — |
| Gabapentin | 37 | — |
| Sertraline Hcl | 34 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-17
- Last updated
- 2026-02-17
- Certified
- 2026-02-17
Frequently asked questions
- What is Maureen Callnan's NPI number?
- Maureen Callnan's National Provider Identifier (NPI) is 1740332949, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maureen Callnan's specialty?
- Maureen Callnan is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Maureen Callnan located?
- Maureen Callnan's practice location on file with NPPES is 449 Forest Ave Ste 211, Portland, ME 04101-2008.
- What is Maureen Callnan's phone number?
- The practice phone number listed in the NPPES registry for Maureen Callnan is (207) 773-1966.
- Does Maureen Callnan accept Medicare?
- Maureen Callnan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maureen Callnan's NPI active?
- Yes — Maureen Callnan's NPI (1740332949) is active in the NPPES registry as of the last update on 2026-02-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.