What is Katherine James's NPI number?

Katherine James's National Provider Identifier (NPI) is 1821483546, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Katherine James's specialty?

Katherine James is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).

Where is Katherine James located?

Katherine James's practice location on file with NPPES is 1225 Whitehorse Mercerville Rd, Mercerville, NJ 08619-3882.

What is Katherine James's phone number?

The practice phone number listed in the NPPES registry for Katherine James is (609) 581-2200.

Does Katherine James accept Medicare?

Katherine James is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Katherine James's NPI active?

Yes — Katherine James's NPI (1821483546) is active in the NPPES registry as of the last update on 2021-03-02.

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Katherine James

NPI 1821483546 · Physician Assistant · Mercerville, NJ

Katherine James is a Physician Assistant provider in Mercerville, NJ (NPI 1821483546).

Provider details

NPI number: 1821483546
Entity type: Individual
Primary specialty: Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Sex: Female
Sole proprietor: No
License: 25MP00362200 (NJ)

Practice location

1225 Whitehorse Mercerville Rd

Bldg. D, Suite 220

Mercerville, NJ 08619-3882

Phone: (609) 581-2200

Fax: (609) 581-1212

Street-level locationGet directions

More NJ providers

Mailing address

1225 Whitehorse Mercerville Rd

Mercerville, NJ 08619-3882

Specialties & taxonomies

Physician AssistantPrimary363A00000XLicense 25MP00362200 (NJ)
Physician Assistants & Advanced Practice Nursing Providers

Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(58/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
11 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
169 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)
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	48	$115
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	28	$82
Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804	23	$16
Detection Test By Immunoassay With Direct Visual Observation for Severe Acute Respiratory Syndrome Coronavirus 2 (covid-19)87811	18	$41
Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215	18	$162
X-Ray of Chest, 2 Views71046

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Doxycycline Hyclate	19	19
Amoxicillin	15	15
Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass	13	12
Cephalexin	11	11

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do not include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Enumerated: 2015-03-31
Last updated: 2021-03-02
Certified: 2021-01-06

Frequently asked questions

What is Katherine James's NPI number?: Katherine James's National Provider Identifier (NPI) is 1821483546, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Katherine James's specialty?: Katherine James is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
Where is Katherine James located?: Katherine James's practice location on file with NPPES is 1225 Whitehorse Mercerville Rd, Mercerville, NJ 08619-3882.
What is Katherine James's phone number?: The practice phone number listed in the NPPES registry for Katherine James is (609) 581-2200.
Does Katherine James accept Medicare?: Katherine James is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Katherine James's NPI active?: Yes — Katherine James's NPI (1821483546) is active in the NPPES registry as of the last update on 2021-03-02.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

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)
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	48	$115
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	28	$82
Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804	23	$16
Detection Test By Immunoassay With Direct Visual Observation for Severe Acute Respiratory Syndrome Coronavirus 2 (covid-19)87811	18	$41
Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215	18	$162
X-Ray of Chest, 2 Views71046

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Doxycycline Hyclate	19	19
Amoxicillin	15	15
Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass	13	12
Cephalexin	11	11

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)