Joyce Mcmahon, RN
NPI 1821855610 · Addiction (Substance Use Disorder) Registered Nurse · Baltimore, MD
Joyce Mcmahon, RN is a Addiction (Substance Use Disorder) Registered Nurse provider in Baltimore, MD (NPI 1821855610).
Provider details
- NPI number
- 1821855610
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) Registered NurseNursing Service Providers
- Credential
- RN
- Sex
- Female
- Sole proprietor
- No
- License
- R149321 (MD)
Specialties & taxonomies
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2024-02-28
- Last updated
- 2024-02-28
- Certified
- 2024-02-28
Frequently asked questions
- What is Joyce Mcmahon's NPI number?
- Joyce Mcmahon's National Provider Identifier (NPI) is 1821855610, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joyce Mcmahon's specialty?
- Joyce Mcmahon is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Registered Nurse (Nursing Service Providers).
- Where is Joyce Mcmahon located?
- Joyce Mcmahon's practice location on file with NPPES is 827 Linden Ave Ste B, Baltimore, MD 21201-4606.
- What is Joyce Mcmahon's phone number?
- The practice phone number listed in the NPPES registry for Joyce Mcmahon is (410) 225-8240.
- Is Joyce Mcmahon's NPI active?
- Yes — Joyce Mcmahon's NPI (1821855610) is active in the NPPES registry as of the last update on 2024-02-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.