Joanna Ly, NP
NPI 1851868111 · Family Nurse Practitioner · Boston, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joanna Ly, NP is a Family Nurse Practitioner provider in Boston, MA (NPI 1851868111).
Provider details
- NPI number
- 1851868111
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- RN254812 (MA)
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
7 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
25 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 14 | $111 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 11 | $80 |
Typical Medicare-allowed amounts for these services range $80–$111 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-10-25
- Last updated
- 2019-01-04
Frequently asked questions
- What is Joanna Ly's NPI number?
- Joanna Ly's National Provider Identifier (NPI) is 1851868111, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joanna Ly's specialty?
- Joanna Ly is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Joanna Ly located?
- Joanna Ly's practice location on file with NPPES is 11 Melnea Cass Blvd, Boston, MA 02119-4401.
- What is Joanna Ly's phone number?
- The practice phone number listed in the NPPES registry for Joanna Ly is (617) 414-2080.
- Does Joanna Ly accept Medicare?
- Joanna Ly is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joanna Ly's NPI active?
- Yes — Joanna Ly's NPI (1851868111) is active in the NPPES registry as of the last update on 2019-01-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.