KATHLEEN MICHELLE LEAHY M.D., MPH
NPI 1275913014
Internal Medicine - Medical Oncology in Weymouth, MA
NPI Status: Active since June 07, 2015
Contact Information
101 COLUMBIAN ST
WEYMOUTH, MA
ZIP 02190
Phone: (781) 624-5000
Fax: (781) 624-4840
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
- Individual
- Female
- Years of Experience 11
- Internal Medicine
- Medical Oncology
- Accepts Insurance
- Accepts Medicare Approved Payment
- PECOS Enrolled
About KATHLEEN LEAHY
This page provides the complete NPI Profile along with additional information for Kathleen Leahy, an internist established in Weymouth, Massachusetts with a medical specialization in Internal Medicine, focusing in medical oncology and more than 11 years of experience. She graduated from Boston University School Of Medicine in 2015. The healthcare provider is registered in the NPI registry with number 1275913014 assigned on June 2015. The practitioner's primary taxonomy code is 207RX0202X with license number 288208 (MA). The provider is registered as an individual and her NPI record was last updated May 2026.
- NPI
- 1275913014
- Provider Name
- KATHLEEN MICHELLE LEAHY M.D., MPH
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 101 COLUMBIAN ST WEYMOUTH, MA 02190
- Location Phone
- (781) 624-5000
- Location Fax
- (781) 624-4840
- Mailing Address
- 101 COLUMBIAN ST WEYMOUTH, MA 02190
- Mailing Phone
- (781) 624-5000
- Mailing Fax
- (781) 624-4840
- Medical School Name
- BOSTON UNIVERSITY SCHOOL OF MEDICINE
- Graduation Year
- 2015
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 06-07-2015
- Last Update Date
- 05-20-2026
- Code Navigator
An internist like Kathleen Leahy is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Internal Medicine Medical Oncology
- Taxonomy Code
- 207RX0202X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 288208
- License State
- MA
- Taxonomy Description
- An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 207RH0000X | Allopathic & Osteopathic Physicians | Internal Medicine | 288208 (MA) |
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
- Anthem Bronze Access Blue New England HMO 6000/20%/8000 w/HSA - HMO
- Anthem Bronze Access Blue New England HMO 7000/50%/8000 w/HSA - HMO
- Anthem Bronze Access Blue New England HMO 7500/30%/10000 Value - HMO
- Anthem Bronze Access Blue New England HMO 8500/50%/9200 - HMO
- Anthem Gold Access Blue New England HMO 1000/20%/7500 - HMO
- Anthem Gold Access Blue New England HMO 2000/0%/6500 RxD - HMO
- Anthem Gold Access Blue New England HMO 2000/10%/4600 w/HSA - HMO
- Anthem Gold Access Blue New England HMO 2000/10%/7500 - HMO
- Anthem Gold Access Blue New England HMO 2000/20%/4600 w/HSA - HMO
- Anthem Gold Access Blue New England HMO 3000/0%/7500 RxD - HMO
- Anthem Gold Access Blue New England HMO 500/30%/9000 - HMO
- Anthem Platinum Access Blue New England HMO 250/10%/3500 - HMO
- Anthem Silver Access Blue New England HMO 2500/30%/10000 Value - HMO
- Anthem Silver Access Blue New England HMO 3000/30%/9000 Value - HMO
- Anthem Silver Access Blue New England HMO 3500/20%/10000 - HMO
- Anthem Silver Access Blue New England HMO 3500/20%/7250 w/HSA - HMO
- Anthem Silver Access Blue New England HMO 4000/0%/9000 - HMO
- Anthem Silver Access Blue New England HMO 4000/0%/9000 RxD - HMO
- Anthem Silver Access Blue New England HMO 4000/10%/7250 w/HSA - HMO
- Anthem Silver Access Blue New England HMO 4000/20%/8500 - HMO
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Medicare Participation & PECOS Enrollment Status
Kathleen Leahy is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.
Kathleen Leahy is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.
Is the provider registered in PECOS? Yes
PECOS PAC ID: 1951691690
What is the PECOS Associate Control ID?
A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.PECOS Enrollment ID: I20210724000044
What is the Provider Enrollment ID?
The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.Accepts Medicare Assignment? Yes
What does it mean "accepts medicare assignment"?
When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): Yes
Eligible to Order or Refer Power Mobility Devices: Yes
Areas of Expertise
The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
This service was performed 25 times for 21 patientsThis is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
This service was performed 62 times for 56 patientsThis is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
This service was performed 98 times for 80 patientsThis is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
This service was performed 13 times for 13 patientsThis service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
This service was performed 17 times for 17 patientsPhysician Visit Costs
The typical physician office visit costs for Medicare beneficiaries in this area are: $47.46 for a new patient copayment and $27.79 for an established patient copayment.
The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.
For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.
The prices below reflect the costs for new and established patients in the 02190 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99205
- Average New Patient Price $189.86
- Minimum New Patient Price $63.72
- Maximum New Patient Price $189.86
- Average New Patient Copayment $47.46
- Minimum New Patient Copayment $15.93
- Maximum New Patient Copayment $47.46
Established Patients Visit Costs *
The most utilized procedure code for established patients office visits is 99214
- Average Established Patient Price $111.18
- Minimum Established Patient Price $21.07
- Maximum Established Patient Price $155.29
- Average Established Patient Copayment $27.79
- Minimum Established Patient Copayment $5.26
- Maximum Established Patient Copayment $38.82
* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.
Find Provider Hospital Affiliations - Privileges
Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.
Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. Kathleen Leahy is affiliated with the following medical facilities:
| Hospital Name | Address | Phone | Hospital Type | Overall Rating |
|---|---|---|---|---|
| BETH ISRAEL DEACONESS HOSPITAL - NEEDHAM | 148 CHESTNUT STREET NEEDHAM, MA 02494 | (781) 453-3002 | Acute Care Hospitals | |
| BETH ISRAEL DEACONESS MEDICAL CENTER | 330 BROOKLINE AVENUE BOSTON, MA 02215 | (617) 667-7000 | Acute Care Hospitals | |
| SOUTH SHORE HOSPITAL | 55 FOGG ROAD SOUTH WEYMOUTH, MA 02190 | (781) 340-8000 | Acute Care Hospitals | |
| BRIGHAM AND WOMEN'S HOSPITAL | 75 FRANCIS STREET BOSTON, MA 02115 | (617) 732-5500 | Acute Care Hospitals |
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NPI NPI Number Validation
How NPI Validation Works
The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.
To verify the NPI 1275913014, we treat the final digit (4) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 56. The final step is to find the difference between that total and the next multiple of ten (60 - 56 = 4).
Digit-by-digit view
Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.
Step 1: Double every other digit from the right
Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 56 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
SOUTH WEYMOUTH, MA 02190
SOUTH WEYMOUTH, MA 02190
S. WEYMOUTH, MA 02190
SOUTH WEYMOUTH, MA 02190
SOUTH WEYMOUTH, MA 02190
SOUTH WEYMOUTH, MA 02190
SOUTH WEYMOUTH, MA 02190
SOUTH WEYMOUTH, MA 02190
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1275913014, enumerated as an "individual" on June 07, 2015.
The provider is located at 101 COLUMBIAN ST WEYMOUTH, MA 02190 and the phone number is (781) 624-5000.
Internal Medicine with taxonomy code 207RX0202X and a focus in Medical Oncology.
The provider might be accepting Accepts: Anthem Blue Cross and Blue Shield. Please consult your insurance carrier or call the provider to verify.
Kathleen Leahy is affiliated with: BETH ISRAEL DEACONESS HOSPITAL - NEEDHAM, BETH ISRAEL DEACONESS MEDICAL CENTER, SOUTH SHORE HOSPITAL and BRIGHAM AND WOMEN'S HOSPITAL.
