Harleen Grewal
- Medicare services, 2024
- 424
- Medicare patients, 2024
- 319
- Part D claims, 2024
- 186
- Publications
- 4
- Hospital affiliations
- 1
- Practice address
- 23845 McBean Pkwy, Valencia, CA 91355
- Practice phone
- Call (661) 253-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Harleen Grewal'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.
Harleen Grewal is an emergency medicine physician in Valencia, California
Harleen Grewal practices at Henry Mayo Newhall Hospital in Valencia, California, part of Henry Mayo Newhall Hospital.
Harleen Grewal's NPI, 1124551593, was assigned on April 4, 2017. Harleen Grewal graduated from WashU Medicine in 2017. Harleen Grewal holds California license A157685.
- NPI
- 1124551593NPI Registry (opens in a new tab)
- NPI enumeration date
- April 4, 2017
- NPI status
- Active
- Practice phone
- (661) 253-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Harleen Grewal practices at Henry Mayo Newhall Hospital in Valencia, California
Harleen Grewal's primary practice is Henry Mayo Newhall Hospital, at 23845 McBean Pkwy, Valencia, CA 91355 in Los Angeles County. The practice phone is (661) 253-8000.
- Henry Mayo Newhall Hospital23845 McBean Pkwy, Valencia, CA 91355 · Los Angeles CountyPhone(661) 253-8000
Source: Dmand AI Affiliation Data
Harleen Grewal is affiliated with 8 sites of care and 8 medical groups
Harleen Grewal's primary practice is Henry Mayo Newhall Hospital in Valencia, California, part of Henry Mayo Newhall Hospital. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Harleen Grewal to 7 more group practices and clinics and 7 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Harleen Grewal's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Harleen Grewal practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Henry Mayo Newhall Hospital | Available with a free account |
| +7 more sites and 7 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Henry Mayo Newhall Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Harleen Grewal is one of 7,423 emergency medicine physicians in California
Emergency medicine is Harleen Grewal's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Harleen Grewal is board certified in emergency medicine by the American Board of Emergency Medicine. Harleen Grewal is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Emergency medicine physicians near Harleen Grewal
Counts of emergency medicine physicians 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
Harleen Grewal billed Medicare for 424 services in 2024
CMS data shows 424 Medicare services from Harleen Grewal across 4 procedure codes in 2024, for 319 Medicare patients. Medicare paid $42,951 for them. Every service was in a facility, such as a hospital, rather than an office.
Harleen Grewal's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3562024: 3259%
- Tests and treatments
- 2023: 1332024: 9926%
Harleen Grewal compared with the California median for emergency medicine physicians, 2024
- Harleen Grewal
- California median
- Medicare services
- 424vs 26560% above
- Medicare patients
- 319vs 24331% above
- Part D claims
- 88vs 6242% above
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Harleen Grewal'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.
Need commercial claims for Harleen Grewal?
Medicare shows one payer. Book a meeting to get commercial claims data for Harleen Grewal and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Harleen Grewal treated 319 Medicare patients in 2024, average age 75
CMS counts 319 Medicare patients who saw Harleen Grewal in 2024. The largest group is 75 to 84, with 113 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 39% are also on Medicaid. Their average risk score is 2.20, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Harleen Grewal's median patient age at 48, with 59% women.
Harleen Grewal's Medicare patients by age, 2024
Harleen Grewal's Medicare patients by sex, 2024
- Women18558%
- Men13442%
Chronic conditions among Harleen Grewal's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis61%
- Diabetes45%
- Mood disorders44%
- Depression40%
- Ischemic heart disease39%
- Anxiety38%
Share of Medicare patients with each condition. A patient can have several.
Harleen Grewal's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 48
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Harleen Grewal wrote 186 Medicare Part D claims in 2024
In 2024, Harleen Grewal wrote 186 Medicare Part D claims for 133 patients. 96% of them were for generic drugs. CMS names the drug for 88 of them, across 5 drugs with 11 or more claims each, at $534 in total drug cost. In 2023, CMS named 112 claims across 7 drugs.
Harleen Grewal's Part D claims by kind of drug, 2024
- Generic178 claims96%
- Brand-name and other8 claims4%
Harleen Grewal'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 Harleen Grewal's Part D claims, 2024
- Opioids12%22 of 186 claims
- Antibiotics34%64 of 186 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: 1122024: 8821%
Drugs named by CMS: 5 in 2024, 7 in 2023.
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
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Harleen Grewal has 4 publications on record
Dmand AI links 4 papers to Harleen Grewal, published from 2010 to 2022. The most frequent topics are Tuberculosis, Pulmonary.
Harleen Grewal's papers by year, 2010 to 2022
Topics Harleen Grewal writes about most
- Tuberculosis, Pulmonary
Recent publications by Harleen Grewal
Indian J Med Res
See who Harleen Grewal researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Harleen Grewal works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Harleen Grewal received $244 in industry payments from 2023 to 2025
CMS Open Payments shows 4 general payments to Harleen Grewal from 3 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 100% of the total. Merz North America, Inc. paid the most, $100.
General payments to Harleen Grewal by program year, 2023 to 2025
Companies that paid Harleen Grewal the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Harleen Grewal graduated from WashU Medicine
Harleen Grewal graduated from WashU Medicine in 2017.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Harleen Grewal accepts plans from 8 insurance carriers
Harleen Grewal is in network with 8 carriers, including United Healthcare, Elevance and Alliant Health Plans. HMO plans come from the most carriers, 3. Check the plan with the practice before a visit.
- United Healthcare
- Elevance
- Alliant Health Plans
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- HCSC
- Molina
Plan types Harleen Grewal accepts, by number of carriers
- HMO3
- Medicare3
- PPO3
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Harleen Grewal's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Harleen Grewal
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Harleen Grewal's NPI number?
Harleen Grewal's NPI number is 1124551593. It was assigned on April 4, 2017, and it is active in the NPI Registry.
What does Harleen Grewal specialize in?
Harleen Grewal is an emergency medicine physician in Valencia, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Harleen Grewal practice?
Harleen Grewal practices at 23845 McBean Pkwy, Valencia, CA 91355. Harleen Grewal's primary practice is Henry Mayo Newhall Hospital in Valencia, California, part of Henry Mayo Newhall Hospital. Dmand AI also links Harleen Grewal to 7 group practices and clinics and 7 medical groups.
What is Harleen Grewal's office phone number?
The practice phone on file for Harleen Grewal is (661) 253-8000.
What is Harleen Grewal's medical license number?
Harleen Grewal holds California license A157685.
Which hospitals is Harleen Grewal affiliated with?
Harleen Grewal practices at Henry Mayo Newhall Hospital in Valencia, California.
What medical group is Harleen Grewal part of?
Harleen Grewal is linked to Southern California Permanente Medical Group. Dmand AI links Harleen Grewal to 7 more medical groups.
Does Harleen Grewal accept Medicare?
Yes. CMS data shows Harleen Grewal billed Medicare for 424 services in 2024.
How many Medicare patients does Harleen Grewal see?
CMS counts 319 Medicare patients who saw Harleen Grewal in 2024, with an average age of 75.
Is Harleen Grewal board certified?
Yes. Harleen Grewal is board certified in emergency medicine by the American Board of Emergency Medicine.
Show 7 more questionsShow fewer questions
What services does Harleen Grewal bill to Medicare?
In 2024, Harleen Grewal's most billed Medicare services were emergency department visit (99285), heart test or procedure (93042) and emergency department visit (99284).
Where did Harleen Grewal go to medical school?
Harleen Grewal graduated from WashU Medicine in 2017.
What drugs does Harleen Grewal prescribe most?
In 2024 Medicare Part D data, Harleen Grewal's most prescribed drugs by claims were Cefdinir, Ibuprofen and Hydrocodone-Acetaminophen.
Has Harleen Grewal received payments from drug or device companies?
CMS Open Payments shows $244 in general payments to Harleen Grewal from 3 companies from 2023 to 2025. The largest total came from Merz North America, Inc.
How long has Harleen Grewal been practicing?
Harleen Grewal graduated from medical school in 2017, 9 years ago.
Does Harleen Grewal do research?
Dmand AI links 4 publications to Harleen Grewal, published from 2010 to 2022.
What insurance does Harleen Grewal accept?
Harleen Grewal is in network with 8 carriers, including United Healthcare, Elevance and Alliant Health Plans. HMO plans come from the most carriers, 3. Check the plan with the practice before a visit.
Selling to emergency medicine practices?
See emergency medicine physicians 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