DR. MARK JOSHUA CHANG DO - NPI 1861954182 - Internal Medicine in Upland, CA

Q: What is the provider's specialty?

The provider's specialty is Internal Medicine with taxonomy code 207RH0003X and a focus in Hematology & Oncology.

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About Dr. Mark Joshua Chang Do NPPES

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

DR. MARK JOSHUA CHANG DO (NPI 1861954182) is an individual hematology & oncology provider in Upland, California, licensed in California (20A24887) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS and is a graduate of Other (2019).

NPPES Registry Identity

NPI1861954182

Entity TypeIndividualMale

Primary Taxonomy207RH0003X

Provider Legal NameDR. MARK JOSHUA CHANGCredential: DO

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

Mailing AddressPo Box 512185Los Angeles, CA 90051-0185

Phone(909) 949-2242

Fax(909) 981-5783

Sole ProprietorYes

Medical School CMSOtherGraduated 2019

Enumeration DateApril 4, 2019

Last NPPES UpdateJuly 8, 20264 updates tracked since enumeration

NPPES CertifiedJuly 8, 2026

✔ NPI 1861954182 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

License✔ Licensed in CA · 20A24887

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

Also ListedInternal MedicineTaxonomy 207R00000X · License DO3131 (NV)

Also ListedInternal Medicine · Medical OncologyTaxonomy 207RX0202X · License 20A24887 (CA)

1100 SAN BERNARDINO RD STE 1100, Upland, CA 91786

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Other Identifiers 1

OtherDO3131NV · Nv Medical Board Of Osteopathic Medicine

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mark Joshua Chang Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID5294062634

PECOS Enrollment IDI20260423000630

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

$179.42 typical visit price

range $59.60 – $179.42

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

Most-billed visit code 99205

Established Patient

$104.64 typical visit price

range $19.37 – $146.42

Typical copayment $26.16 (range $4.84 – $36.60)

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 12

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

DR. NEEL SAGAR TALWAR MD

Internal Medicine (Hematology & Oncology)