MARIA MARCHENKO M.D.
NPI 1821248451
Pediatrics in Sidney, MT

Q: What is Maria Marchenko's NPI number?

The NPI number for Maria Marchenko is 1821248451. It was assigned to this individual provider in the NPPES registry on September 18, 2008.

Q: What is Maria Marchenko's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Q: When was this NPI record last updated?

The NPPES record for Maria Marchenko was last updated on October 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.

Active since September 18, 2008PECOS EnrolledAccepts Medicare Assignment

216 14TH AVE SW, SIDNEY, MT 59270(406) 488-2100 Get Directions Write a Review

NPPES record last updated: October 10, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Oct 10, 2025, Jul 21, 2022, Jun 15, 2017 and 1 more (4 updates tracked since 2016).

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About Maria Marchenko M.d. NPPES

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

MARIA MARCHENKO M.D. (NPI 1821248451) is an individual pediatrics provider in Sidney, Montana, licensed in Alabama (30913) and active in the NPI registry since September 2008. She is enrolled in Medicare PECOS and is a graduate of Other (1992).

NPPES Registry Identity

NPI1821248451

Entity TypeIndividualFemale

Primary Taxonomy208000000X

Provider Legal NameMARIA MARCHENKOCredential: M.D.

Location Address216 14TH AVE SWSidney, MT 59270-3519

Mailing Address216 14th Ave SwSidney, MT 59270-3519 · (406) 488-2100

Phone(406) 488-2100

Sole ProprietorNo

Medical School CMSOtherGraduated 1992

Enumeration DateSeptember 18, 2008

Last NPPES UpdateOctober 10, 20254 updates tracked since enumeration

NPPES CertifiedOctober 10, 2025

✔ NPI 1821248451 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

Licenses✔ Licensed in AL · 30913✔ Licensed in CT · 046900✔ Licensed in MT · 162004

Definition

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

216 14TH AVE SW, Sidney, MT 59270

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of NC, Cigna Healthcare, Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Maria Marchenko M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1456539980

PECOS Enrollment IDI20251204000481

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Maria Marchenko reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Sidney Health Center

Same address

Critical Access

216 14TH AVE SW
Sidney, MT 59270

Reassigned Medicare billing, Montana enrollment
Also billed through NPI 1568532802 (Montana)
211 clinicians in this Medicare group

NPI 1285719161 (406) 488-2100

Mckenzie County Healthcare Systems Inc

29 mi

Family Medicine

3 4TH ST E
Williston, ND 58801

Reassigned Medicare billing, North Dakota enrollment
108 clinicians in this Medicare group

NPI 1295568376 (701) 577-6337

Children's Urgent Care, LLC

1,341 mi

Urgent Care

500 CAHABA PARK CIR, STE 100
Birmingham, AL 35242

Reassigned Medicare billing, Alabama enrollment
Medicare enrollment name: Childrens Urgent Care, LLC
98 clinicians in this Medicare group

NPI 1124541438 (205) 848-2273

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 59270 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$87.97 typical visit price

range $56.81 – $172.26

Typical copayment $21.99 (range $14.20 – $43.06)

Most-billed visit code 99203

Established Patient

$100.16 typical visit price

range $18.24 – $140.32

Typical copayment $25.04 (range $4.56 – $35.08)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ADAM HYDE MILTON CRNA

Nurse Anesthetist, Certified Registered