Sydney Karahalios, PMHNP, APRN
NPI 1851074496 · Psychiatric/Mental Health Nurse Practitioner · San Diego, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sydney Karahalios, PMHNP, APRN is a Psychiatric/Mental Health Nurse Practitioner provider in San Diego, CA (NPI 1851074496).
Provider details
- NPI number
- 1851074496
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PMHNP, APRN
- Sex
- Female
- Sole proprietor
- Yes
- License
- 266146 (TN)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
2 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$95 across 5 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2023-08-10
- Last updated
- 2023-09-26
- Certified
- 2023-09-26
Frequently asked questions
- What is Sydney Karahalios's NPI number?
- Sydney Karahalios's National Provider Identifier (NPI) is 1851074496, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sydney Karahalios's specialty?
- Sydney Karahalios is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sydney Karahalios located?
- Sydney Karahalios's practice location on file with NPPES is 5060 Shoreham Pl Ste 330, San Diego, CA 92122-5976.
- What is Sydney Karahalios's phone number?
- The practice phone number listed in the NPPES registry for Sydney Karahalios is (650) 863-6564.
- Does Sydney Karahalios accept Medicare?
- Sydney Karahalios is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sydney Karahalios's NPI active?
- Yes — Sydney Karahalios's NPI (1851074496) is active in the NPPES registry as of the last update on 2023-09-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.