REGAN H MARSH M.D.
NPI 1740215730
Emergency Medicine in Boston, MA

NPI Status: Active since July 11, 2006

Contact Information

BRIGHAM AND WOMEN'S HOSPITAL
75 FRANCIS ST/EMERGENCY MEDICINE
BOSTON, MA
ZIP 02115
Phone: (617) 732-8070

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  • Individual
  • Female
  • Years of Experience 22
  • Emergency Medicine
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About REGAN MARSH

This page provides the complete NPI Profile along with additional information for Regan Marsh, a provider established in Boston, Massachusetts with a medical specialization in Emergency Medicine and more than 22 years of experience. She graduated from Perelman School Of Med At The University Of Pennsylvania in 2004. The healthcare provider is registered in the NPI registry with number 1740215730 assigned on July 2006. The practitioner's primary taxonomy code is 207P00000X with license number 230033 (MA). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1740215730
Provider Name
REGAN H MARSH M.D.
Gender
Female
Entity Type
Individual
Location Address
BRIGHAM AND WOMEN'S HOSPITAL 75 FRANCIS ST/EMERGENCY MEDICINE BOSTON, MA 02115
Location Phone
(617) 732-8070
Mailing Address
16 WOODHOLM RD MANCHESTER BY THE SEA, MA 01944
Mailing Phone
(617) 435-9171
Medical School Name
PERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA
Graduation Year
2004
Is Sole Proprietor?
No
Enumeration Date
07-11-2006
Last Update Date
03-14-2025
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Location Map

Secondary Locations

  • Corner of Route N12 and N7
    Fort Defiance, AZ 86504
    (928) 729-8000

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

Emergency Medicine

Taxonomy Code
207P00000X
Type
Allopathic & Osteopathic Physicians
License No.
230033
License State
MA
Taxonomy Description
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

Medicare Participation & PECOS Enrollment Status

Regan Marsh 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.

Regan Marsh 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: 9739225772

    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: I20091006000354

    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.

Emergency department visit for life threatening or functioning severity

An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.

This service was performed 151 times for 151 patients

Emergency department visit for problem of high severity

An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.

This service was performed 34 times for 34 patients

Hospital observation care on day of discharge

Hospital observation care on the day of discharge involves monitoring your health status to ensure stability before you leave. This includes assessing vital signs, response to treatment, and readiness for home care or rehabilitation.

This service was performed 25 times for 25 patients

Initial hospital observation care per day, typically 70 minutes

This service involves a healthcare professional closely monitoring your health condition during your hospital stay. It typically lasts for about 70 minutes each day. This helps in timely detection of any changes in your health, allowing for immediate response and treatment.

This service was performed 18 times for 18 patients

Ultrasound of heart, follow-up

A follow-up ultrasound of the heart, also known as an echocardiogram, is a non-invasive test that uses sound waves to create images of your heart. It helps doctors monitor your heart's function and structures after initial assessment or treatment.

This service was performed 16 times for 16 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $24.41 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 02115 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99203

  • Average New Patient Price $97.64
  • Minimum New Patient Price $63.72
  • Maximum New Patient Price $189.86
  • Average New Patient Copayment $24.41
  • 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. Regan Marsh is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
BRIGHAM AND WOMEN'S HOSPITAL75 FRANCIS STREET
BOSTON, MA 02115
(617) 732-5500Acute Care Hospitals
FAULKNER HOSPITAL-BRIGHAM AND WOMEN'S1153 CENTRE STREET
BOSTON, MA 02130
(617) 983-7000Acute 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 1740215730, we treat the final digit (0) 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 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).

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.

Pos 1
1
Doubled → 2
Pos 2
7
Unchanged
Pos 3
4
Doubled → 8
Pos 4
0
Unchanged
Pos 5
2
Doubled → 4
Pos 6
1
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
7
Unchanged
Pos 9
3
Doubled → 6
Check
0
Target digit
Regular digit Doubled digit Check digit

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.

1 → 2 4 → 8 2 → 4 5 → 10 → 1 3 → 6

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 7 + 8 + 0 + 4 + 1 + 1 + 0 + 7 + 6 + 24 = 60

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 60 is 60. The difference is the calculated check digit.

60 - 60 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1740215730.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Emergency Medicine (Medical Toxicology)
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET, NEVILLE HOUSE
BOSTON, MA 02115
Internal Medicine
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET
BOSTON, MA 02115
Physician Assistant
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET
BOSTON, MA 02115
Nurse Practitioner (Adult Health)
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS ST
BOSTON, MA 02115
Nurse Anesthetist, Certified Registered
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS ST
BOSTON, MA 02115
Nurse Practitioner
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET ADM A BUILDING, 3RD FLOOR
BOSTON, MA 02115
Nurse Practitioner
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET
BOSTON, MA 02115
Nurse Practitioner (Family)
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS ST
BOSTON, MA 02115
Physical Therapist
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET
BOSTON, MA 02115
Thoracic Surgery (Cardiothoracic Vascular Surgery)
BRIGHAM AND WOMEN'S HOSPITAL, DIVISION OF CARDIAC SURGERY
BOSTON, MA 02115
Radiology (Diagnostic Radiology)
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS ST.
BOSTON, MA 02115
Physical Therapist
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET
BOSTON, MA 02115
Anesthesiology
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET
BOSTON, MA 02115
Internal Medicine (Cardiovascular Disease)
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET
BOSTON, MA 02115
Physician Assistant
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET
BOSTON, MA 02115
Student in an Organized Health Care Education/Training Program
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET
BOSTON, MA 02115
Anesthesiology
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS ST, CWN-L1
BOSTON, MA 02115
Orthopaedic Surgery
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS ST
BOSTON, MA 02115
Internal Medicine (Gastroenterology)
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET
BOSTON, MA 02115
Internal Medicine (Interventional Cardiology)
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET
BOSTON, MA 02115

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1740215730, enumerated as an "individual" on July 11, 2006.

The provider is located at BRIGHAM AND WOMEN'S HOSPITAL 75 FRANCIS ST/EMERGENCY MEDICINE BOSTON, MA 02115 and the phone number is (617) 732-8070.

Emergency Medicine with taxonomy code 207P00000X.

Regan Marsh is affiliated with: BRIGHAM AND WOMEN'S HOSPITAL and FAULKNER HOSPITAL-BRIGHAM AND WOMEN'S.