Catherine Lyden, FNP
NPI 1841553872 · Family Nurse Practitioner · South Portland, ME
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Catherine Lyden, FNP is a Family Nurse Practitioner provider in South Portland, ME (NPI 1841553872).
Provider details
- NPI number
- 1841553872
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- CNP121026 (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
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
20 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 | 20 | $81 |
Typical Medicare-allowed amounts for these services range $81–$81 (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
Additional practice locations (1)
- 49 Spring StScarborough, ME 04074-8926Phone: (207) 885-0011Fax: (207) 885-5851
Registry dates
- Enumerated
- 2012-06-25
- Last updated
- 2026-03-24
- Certified
- 2026-03-24
Frequently asked questions
- What is Catherine Lyden's NPI number?
- Catherine Lyden's National Provider Identifier (NPI) is 1841553872, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Lyden's specialty?
- Catherine Lyden is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Catherine Lyden located?
- Catherine Lyden's practice location on file with NPPES is 100 Foden Rd # 103, South Portland, ME 04106-2327.
- What is Catherine Lyden's phone number?
- The practice phone number listed in the NPPES registry for Catherine Lyden is (207) 828-1122.
- Does Catherine Lyden accept Medicare?
- Catherine Lyden is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Catherine Lyden's NPI active?
- Yes — Catherine Lyden's NPI (1841553872) is active in the NPPES registry as of the last update on 2026-03-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.