DR. AARON LEIGH BAGGISH M.D.
NPI 1366583403
Internal Medicine - Cardiovascular Disease in Boston, MA
NPI Status: Active since February 10, 2007
Contact Information
55 FRUIT ST
YAWKEY 5, MASSACHUSETTS GENERAL HOSPITAL
BOSTON, MA
ZIP 02114
Phone: (617) 724-6750
- Individual
- Male
- Internal Medicine
- Cardiovascular Disease
- Accepts Insurance
- PECOS Enrolled
About AARON BAGGISH
This page provides the complete NPI Profile along with additional information for Aaron Baggish, an internist established in Boston, Massachusetts with a medical specialization in Internal Medicine, focusing in cardiovascular disease . The healthcare provider is registered in the NPI registry with number 1366583403 assigned on February 2007. The practitioner's primary taxonomy code is 207RC0000X with license number 221427 (MA). The provider is registered as an individual and his NPI record was last updated 18 years ago.
- NPI
- 1366583403
- Provider Name
- DR. AARON LEIGH BAGGISH M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 55 FRUIT ST YAWKEY 5, MASSACHUSETTS GENERAL HOSPITAL BOSTON, MA 02114
- Location Phone
- (617) 724-6750
- Mailing Address
- 55 FRUIT ST YAWKEY 5, MASSACHUSETTS GENERAL HOSPITAL BOSTON, MA 02114
- Mailing Phone
- (617) 724-6750
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 02-10-2007
- Last Update Date
- 07-08-2007
- Code Navigator
An internist like Aaron Baggish 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 Cardiovascular Disease
- Taxonomy Code
- 207RC0000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 221427
- License State
- MA
- Taxonomy Description
- An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
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 5000/10%/8000 w/HSA - HMO
- Anthem Bronze Access Blue New England HMO 5000/20%/8000 w/HSA - HMO
- Anthem Bronze Access Blue New England HMO 6500/30%/9200 Value - HMO
- Anthem Bronze Access Blue New England HMO 7000/50%/8000 w/HSA - 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%/5500 RxD - HMO
- Anthem Gold Access Blue New England HMO 500/25%/7000 - HMO
- Anthem Platinum Access Blue New England HMO 250/10%/3500 - HMO
- Anthem Silver Access Blue New England HMO 2000/30%/9000 Value - HMO
- Anthem Silver Access Blue New England HMO 3000/20%/8500 - HMO
- Anthem Silver Access Blue New England HMO 3000/30%/9000 Value - HMO
- Anthem Silver Access Blue New England HMO 3500/20%/7250 w/HSA - HMO
- Anthem Silver Access Blue New England HMO 4000/0%/8500 - HMO
- Anthem Silver Access Blue New England HMO 4000/0%/8500 RxD - HMO
- Anthem Silver Access Blue New England HMO 4000/10%/7250 w/HSA - HMO
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Medicare Participation & PECOS Enrollment Status
Aaron Baggish 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
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, 40-54 minutes
Follow-up hospital inpatient care per day, typically 35 minutes
Hospital discharge day management, more than 30 minutes
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
Test for exercise-induced heart and lung stress
Ultrasound of heart with color-depicted blood flow, rate and valve function
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function
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 44 times for 43 patientsFollow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
This service was performed 59 times for 24 patientsHospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
This service was performed 15 times for 15 patientsAn electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
This service was performed 32 times for 31 patientsThis is a test to evaluate how your heart and lungs respond to physical exertion. You'll exercise on a treadmill or a stationary bike, while your heart rate, breathing, blood pressure, and fatigue levels are monitored. This helps identify any abnormal responses to physical activity.
This service was performed 25 times for 25 patientsAn ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.
This service was performed 14 times for 14 patientsThis is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.
This service was performed 120 times for 120 patientsPhysician Visit Costs
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 02114 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99204
- Average New Patient Price $144.11
- Minimum New Patient Price $63.72
- Maximum New Patient Price $189.86
- Average New Patient Copayment $36.02
- 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 99213
- Average Established Patient Price $78.84
- Minimum Established Patient Price $21.07
- Maximum Established Patient Price $155.29
- Average Established Patient Copayment $19.71
- 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.
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NPI Validation Check Digit Calculation
The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.
| Start with the original NPI number, the last digit is the check digit and is not used in the calculation. | |||||||||
| 1 | 3 | 6 | 6 | 5 | 8 | 3 | 4 | 0 | 3 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 3 | 12 | 6 | 10 | 8 | 6 | 4 | 0 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 3 + 1 + 2 + 6 + 1 + 0 + 8 + 6 + 4 + 0 + 24 = 57 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 60 - 57 = 3 | 3 | ||||||||
The NPI number 1366583403 is valid because the calculated check digit 3 using the Luhn validation algorithm matches the last digit of the original NPI number.
Other Providers at the Same Location
The following 20 providers are registered at the same or nearby location.
| NPI | Name / Type | Taxonomy | Address |
|---|---|---|---|
| 1982600144 | ANDREW T CHAN M.D. Individual | Internal Medicine (Gastroenterology) | 55 FRUIT ST BOSTON, MA 02114 (617) 726-3212 |
| 1538166889 | KALOYAN S TANEV MD Individual | Psychiatry & Neurology (Psychiatry) | 55 FRUIT ST WARREN 1220 BOSTON, MA 02114 (617) 726-7511 |
| 1124028238 | DR. DEBRA F WEINSTEIN MD Individual | Internal Medicine (Gastroenterology) | 55 FRUIT ST BOSTON, MA 02114 (617) 724-6007 |
| 1225023658 | BRADEN KUO M.D. Individual | Internal Medicine (Gastroenterology) | 55 FRUIT ST BLAKE 4, GI UNIT. MGH BOSTON, MA 02114 (617) 726-2132 |
| 1881680767 | DR. NANCY J GAGLIANO MD Individual | Internal Medicine | 55 FRUIT ST 4710B BOSTON, MA 02114 (617) 724-6700 |
| 1285620161 | DR. DAVID F TORCHIANA MD Individual | Thoracic Surgery (Cardiothoracic Vascular Surgery) | 55 FRUIT ST BUL 119 BOSTON, MA 02114 (617) 724-9644 |
| 1205823176 | DAVID MICHAEL SHAHIAN MD Individual | Thoracic Surgery (Cardiothoracic Vascular Surgery) | 55 FRUIT ST MGH, BULFINCH 2 BOSTON, MA 02114 (617) 643-4335 |
| 1396734570 | DR. JAY JEFFREY SCHNITZER M.D., PH.D. Individual | Surgery | 55 FRUIT ST PEDIATRIC SURGERY, WRN 11 BOSTON, MA 02114 (617) 724-1602 |
| 1538158696 | DR. THEODORE JOSEPH ONGARO MD Individual | Urology | 55 FRUIT ST GRB 1102 BOSTON, MA 02114 (617) 726-3012 |
| 1922098730 | DR. WEI CHAO MD PHD Individual | Anesthesiology | 55 FRUIT ST CLN 3 BOSTON, MA 02114 (617) 724-3267 |
| 1194715904 | DR. MAURICE ALBRIGHT MD Individual | Orthopaedic Surgery | 55 FRUIT ST YAW 3E ORTHOPAEDIC ASSOCIATES BOSTON, MA 02114 (617) 726-8523 |
| 1841280674 | DR. GREGORY YVES LAUWERS MD Individual | Pathology (Anatomic Pathology) | 55 FRUIT ST PATHOLOGY ASSOCIATES WRN 2 BOSTON, MA 02114 (617) 726-2931 |
| 1609866516 | DR. KENT BALANIS LEWANDROWSKI MD Individual | Pathology (Anatomic Pathology & Clinical Pathology) | 55 FRUIT ST GRB 5 PATHOLOGY ASSOCIATES BOSTON, MA 02114 (617) 726-2275 |
| 1114917986 | DR. JEFFREY A GELFAND MD Individual | Allergy & Immunology | 55 FRUIT ST S50-801 INFECTIOUS DISEASE ASSOCIATES BOSTON, MA 02114 (617) 726-1796 |
| 1750371563 | DR. KATHLEEN BRIGID TRAINOR PSYD Individual | Psychologist | 55 FRUIT ST YAW 6A MASSACHUSSETTS GENERAL HOSPITAL BOSTON, MA 02114 (617) 724-6300 |
| 1073503884 | DR. BOYD TAYLOR THOMPSON MD Individual | Internal Medicine (Pulmonary Disease) | 55 FRUIT ST BOSTON, MA 02114 (617) 724-3705 |
| 1992795512 | DR. RAJESH TIM GANDHI MD Individual | Internal Medicine (Infectious Disease) | 55 FRUIT ST FND 8 INFECTIOUS DISEASE ASSOCIATES BOSTON, MA 02114 (617) 726-8403 |
| 1821088451 | DR. SHIHAB AHMED MBBS Individual | Anesthesiology (Pain Medicine) | 55 FRUIT ST CLN 309 ANESTHESIA ASSOCIATES BOSTON, MA 02114 (617) 726-3030 |
| 1528058153 | DR. MARIE B DEMAY MD Individual | Internal Medicine (Endocrinology, Diabetes & Metabolism) | 55 FRUIT ST WEL 5 BOSTON, MA 02114 (617) 726-8720 |
| 1225028863 | DR. MICHELE TRUCKSIS MD PHD Individual | Internal Medicine | 55 FRUIT ST INFECTIOUS DISEASE ASSOCIATES GRJ 504 BOSTON, MA 02114 (617) 726-3812 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1366583403, enumerated in the NPI registry as an "individual" on February 10, 2007
The provider is located at 55 Fruit St Yawkey 5, Massachusetts General Hospital Boston, Ma 02114 and the phone number is (617) 724-6750
The provider's speciality is Internal Medicine with taxonomy code 207RC0000X with a focus in Cardiovascular Disease
The provider might be accepting Accepts: Anthem Blue Cross and Blue Shield. Please consult your insurance carrier or call the provider to make sure your health plan is currently accepted.
Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary 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.
Medicare beneficiaries should expect a typical cost of $144.11 with an average copayment of $36.02 for new patient appointments. Established patients should expect a typical charge of $78.84 and an average copayment of 19.71. Please review your insurance plan or contact the provider directly to determine your specific costs.
The most common procedures or services performed by this practitioner are: Established patient office or other outpatient visit, 40-54 minutes, Follow-up hospital inpatient care per day, typically 35 minutes, Hospital discharge day management, more than 30 minutes, Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report, Test for exercise-induced heart and lung stress, Ultrasound of heart with color-depicted blood flow, rate and valve function and Ultrasound of heart with color-depicted blood flow, rate, direction and valve function.
This NPI record was last updated on February 10, 2007. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
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