Jill Isaacs, ANP
NPI 1558463166 · Adult Health Nurse Practitioner · Monrovia, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jill Isaacs, ANP is a Adult Health Nurse Practitioner provider in Monrovia, CA (NPI 1558463166).
Provider details
- NPI number
- 1558463166
- Entity type
- Individual
- Primary specialty
- Adult Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ANP
- Sex
- Female
- Sole proprietor
- No
- License
- AP4368 (AZ)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
101 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 35 | $61 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 24 | $135 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 23 | $38 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 19 | $92 |
Typical Medicare-allowed amounts for these services range $38–$135 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-03
- Last updated
- 2020-03-03
- Certified
- 2020-03-03
Frequently asked questions
- What is Jill Isaacs's NPI number?
- Jill Isaacs's National Provider Identifier (NPI) is 1558463166, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jill Isaacs's specialty?
- Jill Isaacs is listed in the NPPES registry with a primary specialty of Adult Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Jill Isaacs located?
- Jill Isaacs's practice location on file with NPPES is 700 S Myrtle Ave, Monrovia, CA 91016-8411.
- What is Jill Isaacs's phone number?
- The practice phone number listed in the NPPES registry for Jill Isaacs is (626) 999-9999.
- Does Jill Isaacs accept Medicare?
- Jill Isaacs is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jill Isaacs's NPI active?
- Yes — Jill Isaacs's NPI (1558463166) is active in the NPPES registry as of the last update on 2020-03-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.