Sonia S. Chahal, PA-C
- Part D claims, 2024
- 35
- Hospital affiliations
- 2
- Industry payments
- $540
- Medical groups
- 4
- State license
- 1
- Practice address
- 505 Parnassus Ave, Box 0296, San Francisco, CA 94143
- Practice phone
- Call (415) 353-2733
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Sonia Chahal'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.
Sonia S. Chahal is a physician assistant in San Francisco, California
Sonia Chahal practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health.
Sonia Chahal's NPI, 1962998849, was assigned on July 3, 2018. Sonia Chahal graduated from Stanford University School of Medicine in 2016.
- NPI
- 1962998849NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9931500725
- NPI enumeration date
- July 3, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (415) 353-2733
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Sonia S. Chahal practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California
Sonia Chahal's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights, at 505 Parnassus Ave, Box 0296, San Francisco, CA 94143 in San Francisco County. The practice phone is (415) 353-2733.
- UCSF Helen Diller Medical Center at Parnassus Heights505 Parnassus Ave, Box 0296, San Francisco, CA 94143 · San Francisco CountyPhone(415) 353-2733
Source: Dmand AI Affiliation Data
Sonia S. Chahal is affiliated with 3 sites of care and 4 medical groups
Sonia Chahal's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health. Sonia Chahal is also affiliated with Fremont Hospital. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Sonia Chahal to 3 more medical groups and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Sonia S. Chahal's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Sonia Chahal practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCSF Helen Diller Medical Center at Parnassus Heights | Available with a free account |
| +2 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Sonia S. Chahal is one of 2,381 physician assistants in California
Medical is Sonia Chahal's primary specialty in the NPI Registry, under taxonomy code 363AM0700X.
Specialties and state licenses
- Medical physician assistantPrimary
Physician assistants near Sonia Chahal
Counts of physician assistants 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
Sonia S. Chahal's patients have a median age of 67
Across all payers, Dmand AI patient panel data puts Sonia Chahal's median patient age at 67, with 40% women.
Sonia Chahal's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women40%
- Men57%
Source: Dmand AI Patient Panel Data
Sonia S. Chahal wrote 35 Medicare Part D claims in 2024
In 2024, Sonia Chahal wrote 35 Medicare Part D claims for 25 patients. 83% of them were for generic drugs.
Sonia Chahal's Part D claims by kind of drug, 2024
- Generic29 claims83%
- Brand-name and other6 claims17%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Sonia S. Chahal takes part in Medicare
Sonia Chahal accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Sonia S. Chahal received $540 in industry payments in 2025
CMS Open Payments shows 8 general payments to Sonia Chahal from 4 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $212.
Companies that paid Sonia Chahal the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sonia S. Chahal graduated from Stanford University School of Medicine
Sonia Chahal graduated from Stanford University School of Medicine in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Sonia S. Chahal'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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 Sonia S. Chahal
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Sonia S. Chahal's NPI number?
Sonia S. Chahal's NPI number is 1962998849. It was assigned on July 3, 2018, and it is active in the NPI Registry.
What does Sonia S. Chahal specialize in?
Sonia S. Chahal is a physician assistant in San Francisco, California. The primary specialty in the NPI Registry is Medical Physician Assistant (taxonomy code 363AM0700X).
Where does Sonia S. Chahal practice?
Sonia Chahal practices at 505 Parnassus Ave, Box 0296, San Francisco, CA 94143. Sonia Chahal's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health. Dmand AI also links Sonia Chahal to 3 medical groups and 1 group practice or clinic.
What is Sonia S. Chahal's office phone number?
The practice phone on file for Sonia Chahal is (415) 353-2733.
Which hospitals is Sonia S. Chahal affiliated with?
Sonia Chahal practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California. Sonia Chahal is also affiliated with Fremont Hospital.
What medical group is Sonia S. Chahal part of?
Sonia Chahal is linked to The Permanente Medical Group, Inc. Dmand AI links Sonia Chahal to 3 more medical groups.
Does Sonia S. Chahal accept Medicare?
Yes. CMS lists Sonia Chahal as accepting Medicare assignment.
Where did Sonia S. Chahal go to medical school?
Sonia Chahal graduated from Stanford University School of Medicine in 2016.
Has Sonia S. Chahal received payments from drug or device companies?
CMS Open Payments shows $540 in general payments to Sonia Chahal from 4 companies from 2025 to 2025. The largest total came from Boston Scientific Corporation.
How long has Sonia S. Chahal been practicing?
Sonia Chahal graduated from medical school in 2016, 10 years ago.
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