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OLEN JACK HASEMAN MD
NPI 1952091381
Internal Medicine in Loma Linda, CA

Active since May 09, 2023PECOS EnrolledAccepts Medicare Assignment
11234 ANDERSON ST, LOMA LINDA, CA 92354(909) 558-4074 Get Directions Write a Review

NPPES record last updated: July 1, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Olen Jack Haseman Md NPPES

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

OLEN JACK HASEMAN MD (NPI 1952091381) is an individual internal medicine provider in Loma Linda, California, licensed in California (A205395) and active in the NPI registry since May 2023. He is enrolled in Medicare PECOS and is a graduate of Other (2023).

NPPES Registry Identity

NPI1952091381
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameOLEN JACK HASEMANCredential: MD
Location Address11234 ANDERSON STLoma Linda, CA 92354-2804
Mailing Address11234 Anderson StLoma Linda, CA 92354-2804 · (909) 558-4074
Phone(909) 558-4074
Sole ProprietorNo
Medical School CMSOtherGraduated 2023
Enumeration DateMay 9, 2023
Last NPPES UpdateJuly 1, 2026
NPPES CertifiedJuly 1, 2026
✔ NPI 1952091381 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A205395
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.
11234 ANDERSON ST, Loma Linda, CA 92354
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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

Olen Jack Haseman Md 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 ID9436614898
PECOS Enrollment IDI20260716004428
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 Reassignment

Medicare enrollment records show Olen Haseman reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Riverside Faculty Medical Group Inc
10 mi
Internal Medicine
26520 CACTUS AVE
Moreno Valley, CA 92555
  • Reassigned Medicare billing, California enrollment
  • 111 clinicians in this Medicare group
NPI 1124032461 (951) 486-5700

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 92354 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
$136.04 typical visit price
range $59.60 – $179.42
Typical copayment $34.01 (range $14.90 – $44.85)
Most-billed visit code 99204
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 20

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

ELYSE LAUREN GURAN
Anesthesiology
11234 ANDERSON ST
LOMA LINDA, CA 92354
San Bernardino County (909) 558-4015
SAMUEL COOK CHAMBI
Anesthesiology
11234 ANDERSON ST
LOMA LINDA, CA 92354
San Bernardino County (909) 558-4015
LUIS MIGUEL OLMEDO TEMICH MD
General Practice
11234 ANDERSON ST
LOMA LINDA, CA 92354
San Bernardino County (909) 558-2822
HYUKJE SUNG MD, MA
Preventive Medicine (Occupational Medicine)
11234 ANDERSON ST
LOMA LINDA, CA 92354
San Bernardino County (909) 558-6491
JEFFERSON BRANCH RICHARDS
Student in an Organized Health Care Education/Training Program
11234 ANDERSON ST
LOMA LINDA, CA 92354
San Bernardino County (909) 558-4074
JOSEPH UNIS M.D.
Radiology (Diagnostic Radiology)
11234 ANDERSON ST
LOMA LINDA, CA 92354
San Bernardino County (909) 558-8311
MARINA LIU M.D.
Anesthesiology
11234 ANDERSON ST
LOMA LINDA, CA 92354
San Bernardino County (909) 558-4475
JOSEPH M WILKINSON CRNA
Nurse Anesthetist, Certified Registered
11234 ANDERSON ST
LOMA LINDA, CA 92354
San Bernardino County (909) 558-4475

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 Olen Haseman's NPI number?

The NPI number for Olen Haseman is 1952091381. It was assigned to this individual provider in the NPPES registry on May 9, 2023.

Where is Olen Haseman located?

Olen Haseman practices at 11234 Anderson St, Loma Linda, CA 92354. The listed phone number is (909) 558-4074.

What is Olen Haseman's specialty?

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

Is Olen Haseman enrolled in Medicare?

Yes. Olen Haseman is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Olen Haseman's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Olen Haseman reassigns Medicare benefits to Riverside Faculty Medical Group Inc (Moreno Valley, CA). The 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 Olen Haseman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Olen Haseman was last updated on July 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.