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CARDIONOW PLLC
NPI 1700694619
Internal Medicine - Cardiovascular Disease in Lynnwood, WA

Active since December 23, 2024CLIA 50D2337025 · Certificate of Compliance
19020 33RD AVE W STE 250, LYNNWOOD, WA 98036(425) 876-4310 Get Directions Write a Review

NPPES record last updated: September 4, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 4, 2025, Jun 9, 2025, Feb 6, 2025 and 1 more (4 updates tracked since 2024).

About Cardionow Pllc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CARDIONOW PLLC (NPI 1700694619) is a healthcare organization registered as a cardiovascular disease in Lynnwood, Washington and active in the NPI registry since December 2024. The organization holds a CLIA Certificate of Compliance certificate valid through April 4, 2028, maintains 2 additional practice locations, and lists Mahesh Mulumudi, Ceo, as its authorized official.

NPPES Registry Identity

NPI1700694619
Entity TypeOrganization
Primary Taxonomy207RC0000X
Legal Business NameCARDIONOW PLLC
Location Address19020 33RD AVE W STE 250Lynnwood, WA 98036-4746
Mailing Address19020 33rd Ave W Ste 250Lynnwood, WA 98036-4746 · (425) 458-0707 · Fax (833) 973-5960
Phone(425) 876-4310
Organization SubpartNo
Authorized OfficialMahesh MulumudiCeo · (425) 458-0707
Enumeration DateDecember 23, 2024
Last NPPES UpdateSeptember 4, 20254 updates tracked since enumeration
NPPES CertifiedSeptember 4, 2025
✔ NPI 1700694619 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
19020 33RD AVE W STE 250, Lynnwood, WA 98036
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Secondary Practice Locations 2

Location 119020 33rd Ave W Ste 550Lynnwood, WA 98036-4743 · Phone (425) 458-0707 · Fax (833) 973-5960
Location 219020 33rd Ave W Ste 230Lynnwood, WA 98036-4754 · Phone (425) 458-0707 · Fax (833) 973-5960

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Premera Blue Cross Blue Shield of Alaska.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Cardionow Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

7

Medicare enrollment records show 7 clinicians reassign Medicare billing to Cardionow PLLC, which bills Medicare for the services they deliver. They are listed nearest first.

Clinicians, nearest first (7)

Kathryn Arneson
Nurse Practitioner
NPI 1124660881
3901 HOYT AVE
Everett, WA 98201
(425) 339-5411
✔ PECOS✔ Accepts Medicare10 mi
Shasank Rijal, M.D
Cardiovascular Disease (Cardiology)
NPI 1093943839
3901 HOYT AVE
Everett, WA 98201
(425) 339-5411
✔ PECOS✔ Accepts Medicare10 mi
Rajesh Subramanian, MBBS
Interventional Cardiology
NPI 1265419741
3901 HOYT AVE
Everett, WA 98201
(425) 339-5414
✔ PECOS✔ Accepts Medicare10 mi
Mahesh Mulumudi
Interventional Cardiology
NPI 1013972488
3901 HOYT AVE
Everett, WA 98201
(425) 339-5411
✔ PECOS✔ Accepts Medicare10 mi
Angela Rideout, A.R.N.P.
Nurse Practitioner
NPI 1750423554
1321 COLBY AVE MEDICAL STAFF OFFICE
Everett, WA 98201
(425) 261-2000
✔ PECOS✔ Accepts Medicare12 mi
Eugene Chang, MD, PHD
Cardiovascular Disease (Cardiology)
NPI 1992199459
2901 174TH ST NE
Marysville, WA 98271
(360) 454-1911
✔ PECOS✔ Accepts Medicare23 mi
Feng Wang, M.D., PH.D.
Cardiovascular Disease (Cardiology)
NPI 1922283431
100 N ACADEMY AVE
Danville, PA 17822
(570) 271-6523
✔ PECOS✔ Accepts Medicare2,275 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Compliance 50D2337025

Cardionow PLLC · Lynnwood, WA
Active · expires Apr 4, 2028
CLIA Number50D2337025
Laboratory TypePhysician Office
Certificate Effective DateAugust 11, 2026
Certificate Expiration DateApril 4, 2028
Laboratory DirectorShasank Rijal
Laboratory Phone(425) 458-0707
Laboratory LocationCardionow PLLC19020 33rd Ave W Ste 250, Lynnwood, WA 98036
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Cardionow PLLC's NPI number?

The NPI number for Cardionow PLLC is 1700694619. It was assigned to this organization in the NPPES registry on December 23, 2024.

Where is Cardionow PLLC located?

Cardionow PLLC is located at 19020 33rd Ave W Ste 250, Lynnwood, WA 98036. The listed phone number is (425) 876-4310.

What is Cardionow PLLC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Cardionow PLLC enrolled in Medicare?

Yes. Cardionow PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Cardionow PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 7 clinicians in 3 Medicare specialties reassign their Medicare billing to Cardionow PLLC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Cardiovascular Disease (Cardiology) (3), Interventional Cardiology (2) and Nurse Practitioner (2). Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Cardionow PLLC hold a CLIA laboratory certificate?

Yes. A Certificate of Compliance (number 50D2337025) is associated with this NPI, valid through April 4, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Cardionow PLLC accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list Cardionow PLLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Cardionow PLLC was last updated on September 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.