Chaffey Medical Group
- Total HCPs
- 4
- Physicians (MD/DO)
- 1
- Nurses and PAs
- 3
- Practice locations
- 2
- Medicare Part B payments
- $52,253
Find the right contacts among 4 HCPs
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Chaffey Medical Group is a single-specialty medical group with 2 practice locations in California
Chaffey Medical Group (William Tsai, D.O., Inc) is based in Upland, California, part of Ashish Malhotra, MD.
Sources: NPPES NPI Registry (CMS); Doctors and Clinicians National Downloadable File (CMS); Dmand AI Org Hierarchy Data; and Dmand AI Affiliation Data
Chaffey Medical Group's NPI is 1598876856 and its PAC ID is 1254590532
- Primary NPI (Type 2)
- 1598876856NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1254590532
- Dmand ID
- NG-MGR-014664
- Medicare enrollment
- Enrolled (PAC ID on file)
- Main site address
- 510 N 13th Ave, Upland, CA 91786-4973
- Main phone
- (909) 985-8838
- Executive emails and mobiles
- Get contacts
- Group type
- Single-specialty
- Core specialty
- Primary care
- Site structure
- Multi-site
- Ownership model
- Clinician owned
- Leadership
- Physician-led
- Medicare Part B payments
- $52,253
- Legal name
- William Tsai, D.O., Inc
Sources: NPPES NPI Registry (CMS); Doctors and Clinicians National Downloadable File (CMS); Dmand AI Org Hierarchy Data; Dmand AI Organization Profile Data; and Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data
Chaffey Medical Group is part of Ashish Malhotra, MD
Dmand AI places Chaffey Medical Group under Ashish Malhotra, MD, an independent practice.
- Ashish Malhotra, MD
- Chaffey Medical Group
- 2 other medical groups
2 other medical groups are part of Ashish Malhotra, MD
Source: Dmand AI Org Hierarchy Data
Org hierarchy
See how Chaffey Medical Group connects to Ashish Malhotra, MD: its parent organizations, sister groups and every site of care in between, with the HCPs and leaders at each one.
Chaffey Medical Group has 1 physician among 4 HCPs
Chaffey Medical Group physicians by specialty
- Family medicine1
Share of the group's 1 physicians.
Chaffey Medical Group physicians
Sources: NPPES NPI Registry (CMS); Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Affiliation Data
Chaffey Medical Group has 2 practice locations in California
Chaffey Medical Group practice locations
Sources: Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Full footprint
Open all 2 practice locations with facility phones, patient visits and the HCPs at each site.
Chaffey Medical Group is a primary care group with 2 subspecialties
Primary care is Chaffey Medical Group's core specialty, with nurse practitioner as its main practice type.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Affiliation Data
Dmand AI tracks the EHR at Chaffey Medical Group
Vendor and product names for each practice location are available with a free account.
| Site | EHR vendor | Product |
|---|---|---|
| Main site | Available with a free account | Available with a free account |
| 1 other practice location | Available with a free account | Available with a free account |
Source: Dmand AI Technology Install Data
Primary care groups in California similar in size to Chaffey Medical Group
These primary care groups have the closest number of HCPs to Chaffey Medical Group.
| Medical group | HCPs |
|---|---|
| Above Urgent CareMontclair, CA | 5 |
| Advanced Cardiovascular InstituteCastro Valley, CA | 5 |
| Advanced Surgical SolutionsEncino, CA | 5 |
| Advance Health Medical GroupBurbank, CA | 5 |
| Advance Nursing Practice Medical Group IncModesto, CA | 5 |
Sources: Dmand AI Affiliation Data; and Dmand AI Peer Benchmarks
Sources for Chaffey Medical Group data
| Data on this page | Source |
|---|---|
| NPI, PAC ID and address | NPPES NPI Registry (CMS) (opens in a new tab)Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Dmand ID, phone, website, LinkedIn and group profile | Dmand AI Org Hierarchy DataDmand AI Organization Profile Data |
| Medicare Part B payments | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| Parent organizations and sister groups | Dmand AI Org Hierarchy Data |
| HCPs and physician specialties | NPPES NPI Registry (CMS) (opens in a new tab)Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Affiliation Data |
| Specialty areas | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Affiliation Data |
| Practice locations and hospitals | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Similar groups | Dmand AI Affiliation DataDmand AI Peer Benchmarks |
| EHR vendors | Dmand AI Technology Install Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Chaffey Medical Group
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Chaffey Medical Group's NPI number?
Chaffey Medical Group's primary NPI (Type 2) is 1598876856.
What is Chaffey Medical Group's PAC ID?
Chaffey Medical Group's Medicare PAC ID is 1254590532, which means the group is enrolled in Medicare.
How many locations does Chaffey Medical Group have?
Dmand AI links Chaffey Medical Group to 2 practice locations in California. Its main site is at 510 N 13th Ave, Upland, CA 91786-4973.
What is Chaffey Medical Group's phone number?
Chaffey Medical Group's main phone number is (909) 985-8838.
Who owns Chaffey Medical Group?
Dmand AI places Chaffey Medical Group under Ashish Malhotra, MD, an independent practice.
How many physicians does Chaffey Medical Group have?
Dmand AI links 1 physician and 4 HCPs in all to Chaffey Medical Group.
What specialties does Chaffey Medical Group cover?
Chaffey Medical Group is a primary care group with 2 subspecialties. The largest physician specialties are family medicine (1).
How much does Chaffey Medical Group receive from Medicare?
CMS data shows $52,253 in Medicare Part B payments to Chaffey Medical Group.
What other medical groups are part of Ashish Malhotra, MD?
Ashish Malhotra, MD has 2 other medical groups in Dmand AI, including Chaffey Medical Group and Cong T. Phan M.D., Inc.
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