Charlotte Holleran, RN
NPI 1821683780 · Surgical Critical Care Physician · Medford, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charlotte Holleran, RN is a Surgical Critical Care Physician provider in Medford, MA (NPI 1821683780).
Provider details
- NPI number
- 1821683780
- Entity type
- Individual
- Primary specialty
- Surgical Critical Care PhysicianAllopathic & Osteopathic Physicians
- Credential
- RN
- Sex
- Female
- Sole proprietor
- No
- License
- RN277786 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
5 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
213 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) |
|---|---|---|
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 104 | $108 |
| Residence Visit for Established Patient With Low Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99348 | 69 | $65 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 22 | $113 |
| Residence Visit for Established Patient With High Level of Medical Decision Making, Per Day, If Using Time, at Least 60 Minutes99350 | 18 | $158 |
Typical Medicare-allowed amounts for these services range $65–$158 (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 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 24 | — |
| Amlodipine Besylate | 23 | — |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 20 | 19 |
| Apixabanbrand: Eliquis | 20 | — |
| Gabapentin | 18 | — |
| Atorvastatin Calcium | 16 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-03-03
- Last updated
- 2021-03-03
- Certified
- 2021-03-03
Frequently asked questions
- What is Charlotte Holleran's NPI number?
- Charlotte Holleran's National Provider Identifier (NPI) is 1821683780, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charlotte Holleran's specialty?
- Charlotte Holleran is listed in the NPPES registry with a primary specialty of Surgical Critical Care Physician (Allopathic & Osteopathic Physicians).
- Where is Charlotte Holleran located?
- Charlotte Holleran's practice location on file with NPPES is 611 Fellsway W, Medford, MA 02155-1849.
- What is Charlotte Holleran's phone number?
- The practice phone number listed in the NPPES registry for Charlotte Holleran is (781) 498-8221.
- Does Charlotte Holleran accept Medicare?
- Charlotte Holleran is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charlotte Holleran's NPI active?
- Yes — Charlotte Holleran's NPI (1821683780) is active in the NPPES registry as of the last update on 2021-03-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.