MICHAEL S KIERNAN M.D.
NPI 1891985933
Internal Medicine - Cardiovascular Disease in Boston, MA

Active since July 25, 2007PECOS EnrolledAccepts Medicare Assignment
800 WASHINGTON ST, BOSTON, MA 02111(617) 636-5000 Get Directions Write a Review

NPPES record last updated: March 7, 2022. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Mar 7, 2022, Nov 10, 2020, Aug 10, 2018 (3 updates tracked since 2018).

About Michael S Kiernan M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MICHAEL S KIERNAN M.D. (NPI 1891985933) is an individual cardiovascular disease provider in Boston, Massachusetts, licensed in Massachusetts (232747) and active in the NPI registry since July 2007. He is enrolled in Medicare PECOS, is affiliated with Tufts Medical Center, and maintains a secondary practice location in Worcester.

NPPES Registry Identity

NPI1891985933
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameMICHAEL S KIERNANCredential: M.D.
Location Address800 WASHINGTON STBoston, MA 02111
Mailing AddressPo Box 415348Boston, MA 02241-5348 · (800) 225-8885 · Fax (508) 334-1977
Sole ProprietorNo
Medical School CMSUniversity Of Connecticut School Of MedicineGraduated 2004
Enumeration DateJuly 25, 2007
Last NPPES UpdateMarch 7, 20223 updates tracked since enumeration
NPPES CertifiedMarch 7, 2022
NPI 1891985933 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License Licensed in MA · 232747
Definition

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.

Also ListedInternal Medicine · Advanced Heart Failure and Transplant CardiologyTaxonomy 207RA0001X · License 232747 (MA)
800 WASHINGTON ST, Boston, MA 02111

Secondary Practice Location 1

Location 155 Lake Ave NWorcester, MA 01655-0002 · Phone (508) 856-3191 · Fax (508) 856-4571

Other Identifiers 1

Medicaid110085606AMA

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Michael S Kiernan M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6103989231
PECOS Enrollment IDI20090115000141
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
392 services301 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-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.
215 services52 patients
Evaluation of lower heart chamber assist device 93750
An evaluation of a lower heart chamber assist device is a procedure to check the function of an implanted device aiding your heart's lower chambers. This helps ensure optimal heart function by monitoring the device's performance and your heart's response to it.
126 services20 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
104 services19 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This 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.
62 services48 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
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.
44 services34 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Tufts Medical Center

Acute Care Hospitals · Boston, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220116
Location800 Washington StreetBoston, MA 02111 · Suffolk County
Emergency services Birthing friendly

Umass Memorial Medical Center/University Campus

Acute Care Hospitals · Worcester, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220163
Location55 Lake Avenue NorthWorcester, MA 01655 · Worcester County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02111 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
Established Patient
$78.84 typical visit price
range $21.07 – $155.29
Typical copayment $19.71 (range $5.26 – $38.82)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 7

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Supplies for maintenance of non-insulin drug infusion catheter, per week (list drugs separately) A4221
DME-Other DME · category DE017N
1 supplier27 claims27 services$18.92 avg. paid by Medicare
Infusion supplies for external drug infusion pump, per cassette or bag (list drugs separately) A4222
DME-Medical/Surgical Supplies · category DA000N
1 supplier31 claims215 services$38.39 avg. paid by Medicare
Injection, milrinone lactate, 5 mg J2260
Treatment-Injections and Infusions (nononcologic) · category RI026N
1 supplier31 claims1,859 services$1.29 avg. paid by Medicare
Tacrolimus, immediate release, oral, 1 mg J7507
Treatment-Treatment - Miscellaneous · category RX029N
1 supplier45 claims2,640 services$0.34 avg. paid by Medicare
Mycophenolate mofetil, oral, 250 mg J7517
Treatment-Treatment - Miscellaneous · category RX029N
3 suppliers43 claims4,110 services$0.20 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511
Treatment-Chemotherapy · category RH012N
3 suppliers48 claims48 services$18.21 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Internal Medicine (Gastroenterology)
800 WASHINGTON ST, BOX 233
BOSTON, MA 02111
Technician/Technologist (Optician)
800 WASHINGTON ST, BOX 450
BOSTON, MA 02111
Plastic Surgery
800 WASHINGTON ST
BOSTON, MA 02111
Internal Medicine
800 WASHINGTON ST
BOSTON, MA 02111
Internal Medicine (Infectious Disease)
800 WASHINGTON ST
BOSTON, MA 02111
Student in an Organized Health Care Education/Training Program
800 WASHINGTON ST
BOSTON, MA 02111
Psychiatry & Neurology (Psychiatry)
800 WASHINGTON ST
BOSTON, MA 02111
Student in an Organized Health Care Education/Training Program
800 WASHINGTON ST
BOSTON, MA 02111

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Michael Kiernan's NPI number?

The NPI number for Michael Kiernan is 1891985933. It was assigned to this individual provider in the NPPES registry on July 25, 2007.

Where is Michael Kiernan located?

Michael Kiernan practices at 800 Washington St, Boston, MA 02111. The listed phone number is (617) 636-5000.

What is Michael Kiernan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Michael Kiernan enrolled in Medicare?

Yes. Michael Kiernan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Michael Kiernan accept?

Health plans from Anthem Blue Cross and Blue Shield list Michael Kiernan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Michael Kiernan affiliated with any hospitals?

According to CMS data, Michael Kiernan is affiliated with Tufts Medical Center and Umass Memorial Medical Center/University Campus.

When was this NPI record last updated?

The NPPES record for Michael Kiernan was last updated on March 7, 2022. NPI Profile syncs with the weekly NPPES data releases published by CMS.