Karla Holtzman, PA
NPI 1851544936 · Medical Physician Assistant · Naperville, IL
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karla Holtzman, PA is a Medical Physician Assistant provider in Naperville, IL (NPI 1851544936).
Provider details
- NPI number
- 1851544936
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Female
- Sole proprietor
- No
- License
- 085.001217 (IL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
17 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 73 | 15 |
| Alprazolam | 49 | 15 |
| Amlodipine Besylate | 42 | 15 |
| Atorvastatin Calcium | 40 | 16 |
| Rosuvastatin Calcium | 39 | 13 |
| Montelukast Sodium | 34 | 12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,100 across 57 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
Additional practice locations (1)
- 1012 95th StNaperville, IL 60564-6041Phone: (630) 778-4700
Registry dates
- Enumerated
- 2008-11-03
- Last updated
- 2019-05-13
Frequently asked questions
- What is Karla Holtzman's NPI number?
- Karla Holtzman's National Provider Identifier (NPI) is 1851544936, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karla Holtzman's specialty?
- Karla Holtzman is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karla Holtzman located?
- Karla Holtzman's practice location on file with NPPES is 2272 95th St Ste 325, Naperville, IL 60564-8944.
- What is Karla Holtzman's phone number?
- The practice phone number listed in the NPPES registry for Karla Holtzman is (630) 778-4700.
- Does Karla Holtzman accept Medicare?
- Karla Holtzman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karla Holtzman's NPI active?
- Yes — Karla Holtzman's NPI (1851544936) is active in the NPPES registry as of the last update on 2019-05-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.