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

MARIKO HAGIWARA M.D.
NPI 1679899157
Internal Medicine in Richmond, VA

Q: What is Mariko Hagiwara's NPI number?

The NPI number for Mariko Hagiwara is 1679899157. It was assigned to this individual provider in the NPPES registry on April 9, 2010. The provider is also known as Mariko Saso-Hagiwara.

Q: What is Mariko Hagiwara's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Mariko Hagiwara was last updated on September 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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 April 09, 2010PECOS EnrolledAccepts Medicare Assignment

1300 E MARSHALL ST, RICHMOND, VA 23298(804) 828-3144(804) 628-7104 Get Directions Write a Review

NPPES record last updated: September 11, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: Sep 11, 2026, Apr 9, 2025, Jul 21, 2022 and 2 more (5 updates tracked since 2017).

On this page

About Mariko Hagiwara M.d. NPPES

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

MARIKO HAGIWARA M.D. (NPI 1679899157) is an individual internal medicine provider in Richmond, Virginia, licensed in Virginia (0101289410) and active in the NPI registry since April 2010. She is enrolled in Medicare PECOS, is affiliated with University Of Iowa Hospital & Clinics, and maintains 6 additional practice locations.

NPPES Registry Identity

NPI1679899157

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameMARIKO HAGIWARACredential: M.D.

Location Address1300 E MARSHALL STRichmond, VA 23298-5028

Mailing AddressPo Box 780125Philadelphia, PA 19178-0125 · (804) 922-4844

Phone(804) 828-3144

Fax(804) 628-7104

Sole ProprietorNo

Medical School CMSOtherGraduated 2004

Enumeration DateApril 9, 2010

Last NPPES UpdateSeptember 11, 20265 updates tracked since enumeration

NPPES CertifiedSeptember 11, 2026

✔ NPI 1679899157 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Licenses✔ Licensed in VA · 0101289410✔ Licensed in IA · MD-44493

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedHospitalistTaxonomy 208M00000X · License MD-44493 (IA), P8360 (TX)

1300 E MARSHALL ST, Richmond, VA 23298

Open in Google Maps ↗

Other Names 1

Former Name (1)Mariko Saso-hagiwara

Secondary Practice Locations 6

Location 1618 Hospital RdTappahannock, VA 22560-5000 · Phone (804) 380-0744 · Fax (804) 628-7104

Location 21755 N Mecklenburg AveSouth Hill, VA 23970-4080 · Phone (434) 447-3151 · Fax (434) 584-5023

Location 31250 E Marshall StRichmond, VA 23298-5023 · Phone (804) 828-3144 · Fax (804) 628-7104

Location 4200 Hawkins DrIowa City, IA 52242-1009 · Phone (319) 356-1616

Location 5701 W Forevergreen RdNorth Liberty, IA 52317-9848 · Phone (319) 356-4019 · Fax (319) 356-3949

Location 6520 Madison Oak DrSan Antonio, TX 78258-3913 · Phone (210) 297-4000

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Medica, Sanford Health Plan.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mariko Hagiwara 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 ID6103054952

PECOS Enrollment IDI20170824001985

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.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

295 services134 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

84 services80 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

University Of Iowa Hospital & Clinics

Acute Care Hospitals · Iowa City, IA

3/5 CMS rating

OwnershipGovernment - State

CMS Certification Number160058

Location200 Hawkins DriveIowa City, IA 52242 · Johnson County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 23298 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

$129.04 typical visit price

range $56.19 – $170.30

Typical copayment $32.26 (range $14.04 – $42.57)

Most-billed visit code 99204

Established Patient

$99.13 typical visit price

range $18.07 – $138.91

Typical copayment $24.78 (range $4.51 – $34.72)

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.

DR. FRANCESCA CAPANNI ORAMS M.D

Internal Medicine