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SAMEER K HASSAMAL MD
NPI 1538459011
Psychiatry & Neurology - Psychiatry in La Verne, CA

Active since April 18, 2011PECOS EnrolledAccepts Medicare Assignment
4201 HARTSHORN RANCH PL, LA VERNE, CA 91750(626) 399-1005 Get Directions Write a Review

NPPES record last updated: April 19, 2019. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Apr 19, 2019, Jun 13, 2018, Aug 20, 2016 (3 updates tracked since 2016).

About Sameer K Hassamal Md NPPES

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

SAMEER K HASSAMAL MD (NPI 1538459011) is an individual psychiatry provider in La Verne, California, licensed in California (A133740) and active in the NPI registry since April 2011. He is enrolled in Medicare PECOS, maintains a secondary practice location in Duarte, and is a graduate of Other (2010).

NPPES Registry Identity

NPI1538459011
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameSAMEER K HASSAMALCredential: MD
Location Address4201 HARTSHORN RANCH PLLa Verne, CA 91750
Mailing Address4201 Hartshorn Ranch PlLa Verne, CA 91750-3070
Phone(626) 399-1005
Sole ProprietorNo
Medical School CMSOtherGraduated 2010
Enumeration DateApril 18, 2011
Last NPPES UpdateApril 19, 20193 updates tracked since enumeration
✔ NPI 1538459011 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in CA · A133740
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
4201 HARTSHORN RANCH PL, La Verne, CA 91750
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Secondary Practice Location 1

Location 11500 E. Duarte RoadDuarte, CA 91010 · Phone (626) 256-4673

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

Sameer K Hassamal 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 ID8921246877
PECOS Enrollment IDI20151228000750
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

7

Medicare enrollment records show Sameer Hassamal reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Pih Health Physicians
7.3 mi
Interventional Cardiology
685 N 13TH AVE STE 9
Upland, CA 91786
  • Reassigned Medicare billing, California enrollment
  • 840 clinicians in this Medicare group
NPI 1437815313 (909) 949-3977
Sameer Sunita Hassamal & Company, Apc
7.4 mi
Psychiatry
1113 ALTA AVE STE 106
Upland, CA 91786
  • Reassigned Medicare billing, California enrollment
  • 4 clinicians in this Medicare group
NPI 1710691431 (909) 638-2475
Cep America - Psychiatry PC
24 mi
Psychiatry
400 N PEPPER AVE
Colton, CA 92324
  • Reassigned Medicare billing, California enrollment
  • 208 clinicians in this Medicare group
NPI 1306408000 (909) 580-1000
Senior Doc Integrated Med, PC
26 mi
Family Medicine
5 HUTTON CENTRE DR STE 950
Santa Ana, CA 92707
  • Reassigned Medicare billing, California enrollment
  • 70 clinicians in this Medicare group
NPI 1396526026 (855) 434-7763
Eagan Medical Group, Inc.
29 mi
Psychiatry
7677 CENTER AVE STE 405
Huntington Beach, CA 92647
  • Reassigned Medicare billing, California enrollment
  • 17 clinicians in this Medicare group
NPI 1265946289 (714) 828-1800
Geriatric Support Medical Group PC
39 mi
General Practice
880 APOLLO ST STE 217
El Segundo, CA 90245
  • Reassigned Medicare billing, California enrollment
  • 57 clinicians in this Medicare group
NPI 1548188931 (714) 698-4908
Kern County Hospital Authority
111 mi
General Acute Care Hospital
1700 MOUNT VERNON AVENUE
Bakersfield, CA 93306
  • Reassigned Medicare billing, California enrollment
  • 532 clinicians in this Medicare group
NPI 1376623538 (661) 326-2000

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

Areas of Expertise CMS Part B claims 4

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
74 services28 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
60 services13 patients
Psychotherapy with evaluation and management visit, 30 minutes 90833
Psychotherapy with evaluation and management is a 30-minute session where a mental health professional talks with you about your concerns and feelings. They assess your mental health, provide support, and manage your treatment plan to help improve your well-being.
39 services16 patients
Psychiatric diagnostic evaluation with medical services 90792
A psychiatric diagnostic evaluation with medical services is a comprehensive assessment. It includes a detailed examination of your mental health and physical wellbeing, as well as your personal and family history. This evaluation aids in creating an effective treatment plan.
26 services26 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91750 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
$187.60 typical visit price
range $62.96 – $187.60
Typical copayment $46.90 (range $15.74 – $46.90)
Most-billed visit code 99205
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
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.

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 Sameer Hassamal's NPI number?

The NPI number for Sameer Hassamal is 1538459011. It was assigned to this individual provider in the NPPES registry on April 18, 2011.

Where is Sameer Hassamal located?

Sameer Hassamal practices at 4201 Hartshorn Ranch Pl, La Verne, CA 91750. The listed phone number is (626) 399-1005.

What is Sameer Hassamal's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Sameer Hassamal enrolled in Medicare?

Yes. Sameer Hassamal 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 organizations bill Medicare for Sameer Hassamal's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sameer Hassamal reassigns Medicare benefits to 7 organizations: Pih Health Physicians (Upland, CA), Sameer Sunita Hassamal & Company, Apc (Upland, CA), Cep America - Psychiatry PC (Colton, CA), Senior Doc Integrated Med, PC (Santa Ana, CA), Eagan Medical Group, Inc. (Huntington Beach, CA) and 2 more organizations, listed in the Medicare section above. Each 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 Sameer Hassamal'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 Sameer Hassamal was last updated on April 19, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years 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.