Karen Grayberg, NP
NPI 1891959896 · Pediatric Nurse Practitioner · Phoenix, AZ
Karen Grayberg, NP is a Pediatric Nurse Practitioner provider in Phoenix, AZ (NPI 1891959896).
Provider details
- NPI number
- 1891959896
- Entity type
- Individual
- Primary specialty
- Pediatric Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- RN060525 (AZ)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service 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
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.
$161 across 6 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
- 2008-07-18
- Last updated
- 2013-05-29
Frequently asked questions
- What is Karen Grayberg's NPI number?
- Karen Grayberg's National Provider Identifier (NPI) is 1891959896, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Grayberg's specialty?
- Karen Grayberg is listed in the NPPES registry with a primary specialty of Pediatric Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Grayberg located?
- Karen Grayberg's practice location on file with NPPES is 635 East Baseline Road, Phoenix, AZ 85042-6551.
- What is Karen Grayberg's phone number?
- The practice phone number listed in the NPPES registry for Karen Grayberg is (602) 243-7277.
- Is Karen Grayberg's NPI active?
- Yes — Karen Grayberg's NPI (1891959896) is active in the NPPES registry as of the last update on 2013-05-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.