Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

SEIJA MANISKAS MD, MS
NPI 1861015729
Colon & Rectal Surgery in Upland, CA

Q: What is Seija Maniskas's NPI number?

The NPI number for Seija Maniskas is 1861015729. It was assigned to this individual provider in the NPPES registry on May 26, 2020.

Q: What is Seija Maniskas's specialty?

The primary specialty registered for this NPI is Colon & Rectal Surgery with taxonomy code 208C00000X.

Q: When was this NPI record last updated?

The NPPES record for Seija Maniskas was last updated on August 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 days 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 May 26, 2020PECOS Enrolled

1100 SAN BERNARDINO RD STE 1100, UPLAND, CA 91786(909) 949-2242 Get Directions Write a Review

NPPES record last updated: August 5, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Aug 5, 2026, May 26, 2020 (2 updates tracked since 2020).

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About Seija Maniskas Md, Ms NPPES

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

SEIJA MANISKAS MD, MS (NPI 1861015729) is an individual colon & rectal surgery provider in Upland, California, licensed in California (A187429) and active in the NPI registry since May 2020. She is enrolled in Medicare PECOS, maintains a secondary practice location in Corona, and is a graduate of Other (2020).

NPPES Registry Identity

NPI1861015729

Entity TypeIndividualFemale

Primary Taxonomy208C00000X

Provider Legal NameSEIJA MANISKASCredential: MD, MS

Location Address1100 SAN BERNARDINO RD STE 1100Upland, CA 91786-4952

Mailing AddressPo Box 512185Los Angeles, CA 90051-0185 · (626) 397-5187

Phone(909) 949-2242

Sole ProprietorNo

Medical School CMSOtherGraduated 2020

Enumeration DateMay 26, 2020

Last NPPES UpdateAugust 5, 20262 updates tracked since enumeration

NPPES CertifiedAugust 5, 2026

✔ NPI 1861015729 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyColon & Rectal SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code208C00000X

License✔ Licensed in CA · A187429

Definition

A colon and rectal surgeon is trained to diagnose and treat various diseases of the intestinal tract, colon, rectum, anal canal and perianal area by medical and surgical means. This specialist also deals with other organs and tissues (such as the liver, urinary and female reproductive system) involved with primary intestinal disease.

1100 SAN BERNARDINO RD STE 1100, Upland, CA 91786

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Secondary Practice Location 1

Location 1320 W 6th StCorona, CA 92882-3349 · Phone (951) 898-2828

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Seija Maniskas Md, Ms is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7810496627

PECOS Enrollment IDI20260512003820

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91786 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

$91.88 typical visit price

range $59.60 – $179.42

Typical copayment $22.97 (range $14.90 – $44.85)

Most-billed visit code 99203

Established Patient

$74.08 typical visit price

range $19.37 – $146.42

Typical copayment $18.52 (range $4.84 – $36.60)

Most-billed visit code 99213

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 13

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

MS. GENESIS IBARRA LCSW

Social Worker (Clinical)