Quick answers
- Which hospitals does Harkanwal Singh work at?
- Medicare's official clinician data lists Harkanwal Singh at 5 hospitals: Mercy General Hospital, Mercy Hospital of Folsom, Mercy San Juan Medical Center, NorthBay Medical Center and Sierra Nevada Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Harkanwal Singh see patients?
- Medicare's clinician data lists 2 practice locations, including Fairfield, CA and Folsom, CA. Call before your visit to confirm the address.
- What is Harkanwal Singh's specialty?
- Medicare lists Hospitalist as the primary specialty, and also Internal Medicine.
- Does Harkanwal Singh accept Medicare assignment?
- Yes. Medicare's clinician data says Harkanwal Singh accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Harkanwal Singh?
- (707) 429-3600, as listed in official Medicare / NPI Registry data.
- What is Harkanwal Singh's NPI number?
- 1629396122. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Harkanwal Singh works
Medicare's Facility Affiliation Data lists Harkanwal Singh at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy General HospitalSacramento, CA · Acute Care Hospital · CCN 050017
- Mercy Hospital of FolsomFolsom, CA · Acute Care Hospital · CCN 050414
- Mercy San Juan Medical CenterCarmichael, CA · Acute Care Hospital · CCN 050516
- NorthBay Medical CenterFairfield, CA · Acute Care Hospital · CCN 050367
- Sierra Nevada Memorial HospitalGrass Valley, CA · Acute Care Hospital · CCN 050150
Practice locations
Addresses where Harkanwal Singh is enrolled with Medicare (CMS data updated 2026-10-02).
- 1200 B Gale Wilson BlvdFairfield, CA 94533 (707) 429‑3600
- 1700 Prairie City RdFolsom, CA 95630 (916) 351‑4800
Group practices
Medicare enrollment lists Harkanwal Singh as a member of these groups (CMS data updated 2026-10-02).
- Dignity Health Medical Foundation1,184 clinicians in the group
- NorthBay Physicians Surgery Center, LLC324 clinicians in the group
Specialties
- Hospitalistprimary
- Internal Medicinealso
Other hospitalists in Fairfield
Clinicians with the same Medicare primary specialty in Fairfield, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2002 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1629396122 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians