What is Kathleen O'Brien's NPI number?

Kathleen O'Brien's National Provider Identifier (NPI) is 1942597661, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Kathleen O'Brien's specialty?

Kathleen O'Brien is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).

Where is Kathleen O'Brien located?

Kathleen O'Brien's practice location on file with NPPES is 1 Wellness Way, Topsham, ME 04086-1768.

What is Kathleen O'Brien's phone number?

The practice phone number listed in the NPPES registry for Kathleen O'Brien is (207) 406-7600.

Is Kathleen O'Brien's NPI active?

Yes — Kathleen O'Brien's NPI (1942597661) is active in the NPPES registry as of the last update on 2023-08-24.

IndividualActive

Kathleen O'Brien, P.A.-C

NPI 1942597661 · Physician Assistant · Topsham, ME

Kathleen O'Brien, P.A.-C is a Physician Assistant provider in Topsham, ME (NPI 1942597661).

Provider details

NPI number: 1942597661
Entity type: Individual
Primary specialty: Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Credential: P.A.-C
Sex: Female
Sole proprietor: No
License: PA1272 (ME)

Practice location

1 Wellness Way

Topsham, ME 04086-1768

Phone: (207) 406-7600

Fax: (207) 618-5683

Approximate (ZIP-level) locationGet directions

More ME providers

Mailing address

1 Wellness Way

Topsham, ME 04086-1768

Specialties & taxonomies

Physician AssistantPrimary363A00000XLicense PA1272 (ME)
Physician Assistants & Advanced Practice Nursing Providers

Profile Score

Established profile(66/100 index)

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

Registry tenure25% of score
15 yrs in NPPES registry
Profile completeness25% of score
100% of core fields populated
Practice footprint15% of score
1 documented practice location
Medicare service volume (vs. specialty peers)25% of score
103 Medicare services, 2024 (ranked within specialty)
Open Payments transparency10% of score
Has Open Payments disclosures (2024)

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	56	$76
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	27	$62
Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439	20	$67

Typical Medicare-allowed amounts for these services range $62–$76 (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.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Atorvastatin Calcium	57	24
Lisinopril	53	21
Hydrochlorothiazide	40	13
Amlodipine Besylate	39	15
Levothyroxine Sodium	35	12
Amitriptyline Hcl	34	—
Omeprazole	33	12

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$23 across 1 record (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.

Enumerated: 2011-07-01
Last updated: 2023-08-24
Certified: 2023-08-24

Frequently asked questions

What is Kathleen O'Brien's NPI number?: Kathleen O'Brien's National Provider Identifier (NPI) is 1942597661, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Kathleen O'Brien's specialty?: Kathleen O'Brien is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
Where is Kathleen O'Brien located?: Kathleen O'Brien's practice location on file with NPPES is 1 Wellness Way, Topsham, ME 04086-1768.
What is Kathleen O'Brien's phone number?: The practice phone number listed in the NPPES registry for Kathleen O'Brien is (207) 406-7600.
Is Kathleen O'Brien's NPI active?: Yes — Kathleen O'Brien's NPI (1942597661) is active in the NPPES registry as of the last update on 2023-08-24.

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	56	$76
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	27	$62
Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439	20	$67

Drug

Part D claims (2024)

Beneficiaries

Hydrochlorothiazide

Amitriptyline Hcl

—

Omeprazole

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$23 across 1 record (Open Payments 2024)

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments