What is Lidia Wiersum's NPI number?

Lidia Wiersum's National Provider Identifier (NPI) is 1558605071, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Lidia Wiersum's specialty?

Lidia Wiersum is listed in the NPPES registry with a primary specialty of Gerontology Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).

Where is Lidia Wiersum located?

Lidia Wiersum's practice location on file with NPPES is 2445 270th Ave Se, Issaquah, WA 98029-7901.

What is Lidia Wiersum's phone number?

The practice phone number listed in the NPPES registry for Lidia Wiersum is (262) 748-5588.

Does Lidia Wiersum accept Medicare?

Lidia Wiersum is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Lidia Wiersum's NPI active?

Yes — Lidia Wiersum's NPI (1558605071) is active in the NPPES registry as of the last update on 2020-10-09.

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Lidia Wiersum

NPI 1558605071 · Gerontology Nurse Practitioner · Issaquah, WA

Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Lidia Wiersum is a Gerontology Nurse Practitioner provider in Issaquah, WA (NPI 1558605071).

Provider details

NPI number: 1558605071
Entity type: Individual
Primary specialty: Gerontology Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Sex: Female
Sole proprietor: Yes
License: AP60321256 (WA)

Specialties & taxonomies

Gerontology Nurse PractitionerPrimary363LG0600XLicense AP60321256 (WA)
Physician Assistants & Advanced Practice Nursing Providers

Profile Score

Established profile(68/100 index)

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
4 documented practice locations
Medicare service volume (vs. specialty peers)28% of score
239 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)
Transitional Care Management Services for Problem of at Least Moderate Complexity99495	99	$195
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	61	$118
Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439	49	$119
Transitional Care Management Services for Problem of High Complexity99496	30	$264

Typical Medicare-allowed amounts for these services range $118–$264 (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 · 14 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Atorvastatin Calcium	163	95
Losartan Potassium	73	42
Lisinopril	60	33
Metformin Hclbrand: Metformin Hcl Er	47	28
Rosuvastatin Calcium	40	26
Metformin Hcl	38	24
Furosemide

Practice location

2445 270th Ave Se

Issaquah, WA 98029-7901

Phone: (262) 748-5588

Street-level locationGet directions

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Mailing address