Dr. Sameer K. Hassamal, MD

  • Diamond Bar, CA
  • Psychiatrist
NPI1538459011PAC ID8921246877
Medicare services, 2024
199
Medicare patients, 2024
44
Part D claims, 2024
987
Publications
14
Clinical trials
1
Practice address
21950 Copley Dr, Diamond Bar, CA 91765
Practice phone
Call (626) 840-1023
Professional email
Get professional email
Personal email
Get personal email
Mobile number
Get mobile number
Social profiles

Primary practice

Call the Car

Diamond Bar, California

See all 10 affiliations

Find Dr. Hassamal's professional email, personal email and mobile number

Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.

View contacts for free

Dr. Sameer K. Hassamal is a psychiatrist in Diamond Bar, California

Dr. Hassamal practices at Call the Car in Diamond Bar, California.

Dr. Hassamal's NPI, 1538459011, was assigned on April 18, 2011. Dr. Hassamal graduated from Other in 2006. Dr. Hassamal holds California license A133740.

NPI and contact details
Medicare PAC ID
8921246877
NPI enumeration date
April 18, 2011
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(626) 840-1023
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
42
Medical school graduation
2006

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Sameer K. Hassamal practices at Call the Car in Diamond Bar, California

Dr. Hassamal's primary practice is Call the Car, at 21950 Copley Dr, Diamond Bar, CA 91765 in Los Angeles County. The practice phone is (626) 840-1023.

  • Call the Car
    21950 Copley Dr, Diamond Bar, CA 91765 · Los Angeles CountyPhone(626) 840-1023

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Sameer K. Hassamal is affiliated with 4 sites of care and 6 medical groups

Dr. Hassamal's primary practice is Call the Car in Diamond Bar, California. Dr. Hassamal is also affiliated with Chino Valley Medical Center. The medical group on file is PIH Health Physicians. Dmand AI also links Dr. Hassamal to 1 more hospital, 5 medical groups and 1 group practice or clinic, each named with a free account.

See all 10 affiliations for Dr. Hassamal

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Sameer K. Hassamal's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hassamal practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Call the CarAvailable with a free account
+3 more sites and 5 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every site where Dr. Hassamal practices

Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.

Dr. Sameer K. Hassamal is one of 6,803 psychiatrists in California

Psychiatry is Dr. Hassamal's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Hassamal is board certified in addiction psychiatry by the American Board of Psychiatry and Neurology. Dmand AI has Dr. Hassamal's licenses on file in 2 states: California and Virginia.

Specialties and state licenses

  • Psychiatry, CaliforniaPrimaryLicense A133740 · 2014 to 2026 · taxonomy 2084P0800X
  • Virginia license2011 to 2016

Clinical focus

Dmand AI lists ADHD, bipolar disorder and schizophrenia among the conditions Dr. Hassamal treats.

Psychiatrists near Dr. Hassamal

Counts of psychiatrists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Sameer K. Hassamal billed Medicare for 199 services in 2024

CMS data shows 199 Medicare services from Dr. Hassamal across 4 procedure codes in 2024, for 44 Medicare patients. Medicare paid $22,161 for them. Every service was in an office.

Medicare services, 2024199
Medicare patients44
Paid by Medicare$22,161
Procedure codes4

Dr. Hassamal's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 532024: 134153%
Tests and treatments
2023: 02024: 65

Dr. Hassamal compared with the California median for psychiatrists, 2024

  • Dr. Hassamal
  • California median
Medicare services
199vs 11967% above
Medicare patients
44vs 417% above
Part D claims
809vs 1445.6 times

Medians across 6,809 psychiatrists in California with Dmand AI profiles that report each measure.

Dr. Hassamal's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Hassamal

Need commercial claims for Dr. Hassamal?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hassamal and other psychiatrists in California.

Book a meeting

Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Sameer K. Hassamal treated 44 Medicare patients in 2024, average age 66

CMS counts 44 Medicare patients who saw Dr. Hassamal in 2024. The largest group is 65 to 74, with 19 patients. 75% of them have mood disorders, and 68% have depression. 61% are also on Medicaid. Their average risk score is 1.52, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Hassamal's median patient age at 38, with 54% women.

Medicare patients, 202444
Average age66
Average risk score1.52
Also on Medicaid61%

Dr. Hassamal's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Hassamal's Medicare patients by sex, 2024

  • Women2250%
  • Men2250%

Chronic conditions among Dr. Hassamal's Medicare patients, 2024

  1. Mood disorders75%
  2. Depression68%
  3. High blood pressure68%
  4. High cholesterol64%
  5. Anxiety55%
  6. Arthritis48%
  7. Schizophrenia and other psychoses32%
  8. Diabetes30%

Share of Medicare patients with each condition. A patient can have several.

Dr. Hassamal's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 38

Patient panel by sex, all payers

  • Women54%
  • Men46%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Sameer K. Hassamal wrote 987 Medicare Part D claims in 2024

In 2024, Dr. Hassamal wrote 987 Medicare Part D claims for 68 patients. 93% of them were for generic drugs. CMS names the drug for 809 of them, across 34 drugs with 11 or more claims each, at $35,675 in total drug cost. In 2023, CMS named 701 claims across 28 drugs.

Part D claims, 2024987
Drugs named by CMS34
Total drug cost$35,675
Part D patients68

Dr. Hassamal's Part D claims by kind of drug, 2024

  • Generic915 claims93%
  • Brand-name72 claims7%

Dr. Hassamal's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Hassamal's Part D claims, 2024

  • Antipsychotics, patients 65 and over14%141 of 987 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 7012024: 80915%

Drugs named by CMS: 34 in 2024, 28 in 2023.

See all prescribing by Dr. Hassamal

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Sameer K. Hassamal offers telehealth to Medicare patients

Dr. Hassamal accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Hassamal as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

For MedTech and pharma teams

Find psychiatrists like Dr. Hassamal by procedure volume and prescribing

Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.

Dr. Sameer K. Hassamal has 14 publications on record

Dmand AI links 14 papers to Dr. Hassamal, published from 2013 to 2021. 2015 was the busiest year, with 4. The most frequent topics are Anxiety, Cognition Disorders and COVID-19. Dr. Hassamal's most frequent co-authors are Michael M. Neeki, DO, Atit Bhattachan, MBBS and William Dale, MD, PhD.

Papers14
Years published2013 to 2021

Dr. Hassamal's papers by year, 2013 to 2021

Topics Dr. Hassamal writes about most

  • Anxiety
  • Cognition Disorders
  • COVID-19
  • Depression
  • Pandemics
  • Stress, Psychological

Dr. Hassamal's most frequent co-authors

Recent publications by Dr. Hassamal

See all 14 publications and co-authors

See who Dr. Hassamal researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Hassamal works with, so you can find a warm path to the right psychiatrists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Sameer K. Hassamal has worked on 1 clinical trial

Dmand AI links Dr. Hassamal to 1 clinical trial. Conditions studied include Depressive Disorder, Major and Depressive Disorder.

Conditions in Dr. Hassamal's trials

  • Depressive Disorder, Major
  • Depressive Disorder

Investigators on the most trials with Dr. Hassamal

Recent clinical trials with Dr. Hassamal

Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Dr. Sameer K. Hassamal received $156 in industry payments from 2016 to 2023

CMS Open Payments shows 3 general payments to Dr. Hassamal from 1 drug or device company from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $156.

General payments to Dr. Hassamal by program year, 2016 to 2023

Companies that paid Dr. Hassamal the most, 2016 to 2023

Share is of all general payments to this clinician.

See all payments to Dr. Hassamal

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Sameer K. Hassamal graduated from Other

Dr. Hassamal graduated from Other in 2006.

  1. Medical schoolOther
  2. Board certified in addiction psychiatryAmerican Board of Psychiatry and Neurology
  3. Board certified in brain injury medicineAmerican Board of Psychiatry and Neurology
  4. Board certified in psychiatryAmerican Board of Psychiatry and Neurology

Source: Dmand AI Professional Profile Data

Dr. Sameer K. Hassamal accepts plans from 8 insurance carriers

Dr. Hassamal is in network with 8 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • Blue Cross Blue Shield of Michigan
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Molina
  • Regence Health Plans
  • CMS Medicare

Plan types Dr. Hassamal accepts, by number of carriers

  1. Medicare8
  2. PPO6
  3. HMO4
  4. POS3
  5. EPO2

Source: Dmand AI Insurance Network Data

Sources for Dr. Sameer K. Hassamal's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Sameer K. Hassamal

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Sameer K. Hassamal's NPI number?

Dr. Sameer K. Hassamal's NPI number is 1538459011. It was assigned on April 18, 2011, and it is active in the NPI Registry.

What kind of doctor is Dr. Sameer K. Hassamal?

Dr. Sameer K. Hassamal is a psychiatrist in Diamond Bar, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).

Where does Dr. Sameer K. Hassamal practice?

Dr. Hassamal practices at 21950 Copley Dr, Diamond Bar, CA 91765. Dr. Hassamal's primary practice is Call the Car in Diamond Bar, California. Dmand AI also links Dr. Hassamal to 1 hospital, 5 medical groups and 1 group practice or clinic.

What is Dr. Sameer K. Hassamal's office phone number?

The practice phone on file for Dr. Hassamal is (626) 840-1023.

What is Dr. Sameer K. Hassamal's medical license number?

Dr. Hassamal holds California license A133740, one of the licenses on file in 2 states.

Which states has Dr. Sameer K. Hassamal been licensed in?

Dmand AI has state licenses on file for Dr. Hassamal in California (2014 to 2026) and Virginia (2011 to 2016).

Which hospitals is Dr. Sameer K. Hassamal affiliated with?

Dr. Hassamal is affiliated with Chino Valley Medical Center. Dmand AI links Dr. Hassamal to 1 more hospital.

What medical group is Dr. Sameer K. Hassamal part of?

Dr. Hassamal is linked to PIH Health Physicians. Dmand AI links Dr. Hassamal to 5 more medical groups.

Does Dr. Sameer K. Hassamal accept Medicare?

Yes. CMS data shows Dr. Hassamal billed Medicare for 199 services in 2024, and Dr. Hassamal accepts Medicare assignment.

Does Dr. Sameer K. Hassamal offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Hassamal as offering telehealth services.

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. Sameer K. Hassamal see?

CMS counts 44 Medicare patients who saw Dr. Hassamal in 2024, with an average age of 66.

Is Dr. Sameer K. Hassamal board certified?

Yes. Dr. Hassamal is board certified in addiction psychiatry by the American Board of Psychiatry and Neurology.

What services does Dr. Sameer K. Hassamal bill to Medicare?

In 2024, Dr. Hassamal's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99215) and psychiatric service (90833).

Where did Dr. Sameer K. Hassamal go to medical school?

Dr. Hassamal graduated from Other in 2006.

What drugs does Dr. Sameer K. Hassamal prescribe most?

In 2024 Medicare Part D data, Dr. Hassamal's most prescribed drugs by claims were Quetiapine Fumarate, Bupropion XL and Divalproex Sodium.

Has Dr. Sameer K. Hassamal received payments from drug or device companies?

CMS Open Payments shows $156 in general payments to Dr. Hassamal from 1 company from 2016 to 2023. The largest total came from Janssen Pharmaceuticals, Inc.

How long has Dr. Sameer K. Hassamal been practicing?

Dr. Hassamal graduated from medical school in 2006, 20 years ago.

Does Dr. Sameer K. Hassamal do research?

Dmand AI links 14 publications to Dr. Hassamal, published from 2013 to 2021. Dr. Hassamal has worked on 1 clinical trial.

Who does Dr. Sameer K. Hassamal publish with?

Dr. Hassamal's most frequent co-authors are Michael M. Neeki, DO (2 shared papers), Atit Bhattachan, MBBS (1 shared paper) and William Dale, MD, PhD (1 shared paper).

What insurance does Dr. Sameer K. Hassamal accept?

Dr. Hassamal is in network with 8 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.

Selling to psychiatry practices?

See psychiatrists in California by site of care and group

Find the practices, groups and hospitals they work with, and the right people to contact at each.

  • 30 days free
  • Self-serve
  • No credit card

Cookie settings

Turn each category on or off. Your choice is kept for 12 months and you can change it here at any time.

Necessary

Always on. Sign-in, security, downloads you asked for, your cookie choice, and the page that led to a signup.

View cookies (6)
  • dm_consentDmand AI. Your cookie choices and whether your browser sent a Global Privacy Control signal. 12 months.
  • dm_ft, dm_ltDmand AI. The first and the latest page you arrived on, with the date, so a signup is credited to the page that worked. 90 days, 30 days.
  • dm_fs, dm_lsDmand AI. The first and the latest source of a visit (a search engine, a campaign or the site that linked here). 90 days, 30 days.
  • dm_dl, dm_dl_okDmand AI. After you give an email address for a download, lets you download files without being asked again. 30 days.
  • Session and CSRF cookiesDmand AI (app.dmand.ai). Sign-in and form protection in the application. Session.
  • __cf_bm, cf_clearanceCloudflare. Tells people from automated traffic and keeps the site available. 30 minutes; cf_clearance while a security check is valid.

Analytics

On unless you turn it off. How pages are used, in aggregate, and recordings of how pages are used.

View cookies (6)
  • Google Tag ManagerGoogle. Loads the analytics and marketing tags that are on. Sets no cookie of its own and does not load when both categories are off. n/a.
  • _ga, _ga_<container-id>Google Analytics 4. Visits and page views in aggregate on dmand.ai. 2 years.
  • _clck, _clskMicrosoft Clarity. Recordings and heatmaps of how pages are used, with form fields masked. 1 year, 1 day.
  • CLID, MUID, ANONCHK, MR, SMMicrosoft (clarity.ms). Set by Microsoft when Clarity loads, to recognize a browser across sites that use Clarity. Up to 1 year.
  • None (cookieless)Ahrefs Analytics. Page views in aggregate. n/a.
  • ph_<project>_posthogPostHog. Product usage, errors and performance in app.dmand.ai, used to fix bugs and improve features. 365 days.

Marketing

On unless you turn it off, and always off when your browser sends a Global Privacy Control signal. A visitor identification service tells our sales team which companies and people visit.

View cookies (6)
  • _reb2buid, _reb2butkRB2B. Recognizes a returning browser for visitor identification. 360 days, 1 year.
  • _reb2bgeoRB2B. The location used to decide whether a visit can be identified. 20 days.
  • _reb2brefRB2B. The page or site that referred the visit. 15 days.
  • _reb2bfxf, _reb2btd, _reb2bliRB2B. Links the visit to an identified business profile. 1 month.
  • _reb2bresolveRB2B. Holds a match while it is being resolved. 2 days.
  • _reb2sessionID, _reb2bloadedRB2B. The current visit, and a guard against loading the script twice. 30 minutes, 1 second.

Functional

On unless you turn it off. Remembers choices such as a collapsed section.

View cookies (none today)