Quick answers
- Where does Sydney B. Long see patients?
- Medicare's clinician data lists 2 practice locations, including Modesto, CA and Fresno, CA. Call before your visit to confirm the address.
- What is Sydney B. Long's specialty?
- Medicare lists Allergy/Immunology as the primary specialty.
- Does Sydney B. Long accept Medicare assignment?
- Yes. Medicare's clinician data says Sydney B. Long 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 Sydney B. Long?
- (209) 409-8454, as listed in official Medicare / NPI Registry data.
- What is Sydney B. Long's NPI number?
- 1881924918. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Sydney B. Long is enrolled with Medicare (CMS data updated 2026-10-02).
- 1923 Coffee Rd, Suite 12cModesto, CA 95355 (209) 409‑8454
- 7471 N Fresno StFresno, CA 93720 (559) 436‑4500
Group practices
Medicare enrollment lists Sydney B. Long as a member of this group (CMS data updated 2026-10-02).
- Baz Allergy Asthma and Sinus Center Inc23 clinicians in the group
Specialties
- Allergy/Immunologyprimary
Other allergist and immunologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Johns Hopkins University School Of Medicine |
| Graduation year | 2011 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1881924918 |
| 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
- 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