Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. GREGORIO TAN MD
NPI 1316926751
Internal Medicine - Cardiovascular Disease in Kalamazoo, MI

Q: What is Gregorio Tan's NPI number?

The NPI number for Gregorio Tan is 1316926751. It was assigned to this individual provider in the NPPES registry on January 13, 2006.

Q: What is Gregorio Tan's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Gregorio Tan was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 31 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since January 13, 2006PECOS Enrolled

97.36/100

CMS Quality Rating

1722 SHAFFER ST, SUITE 1, KALAMAZOO, MI 49048(269) 381-3963(269) 381-2809 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

On this page

About Dr. Gregorio Tan Md NPPES

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

DR. GREGORIO TAN MD (NPI 1316926751) is an individual cardiovascular disease provider in Kalamazoo, Michigan, licensed in Michigan (4301067381) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Memorial Hospital Of South Bend, and is a graduate of Other (1979).

NPPES Registry Identity

NPI1316926751

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameDR. GREGORIO TANCredential: MD

Location Address1722 SHAFFER ST, SUITE 1Kalamazoo, MI 49048-1633

Mailing Address1722 Shaffer St, Suite 1Kalamazoo, MI 49048-1633 · (269) 381-3963 · Fax (269) 381-2809

Phone(269) 381-3963

Fax(269) 381-2809

Sole ProprietorNo

Medical School CMSOtherGraduated 1979

Enumeration DateJanuary 13, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1316926751 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in MI · 4301067381

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.

1722 SHAFFER ST, Kalamazoo, MI 49048

Open in Google Maps ↗

Other Identifiers 1

Medicaid4387885MI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.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

Dr. Gregorio Tan Md 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 ID244218576

PECOS Enrollment IDI20040712001404

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 19

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.

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This 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.

203 services200 patients

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.

188 services141 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.

129 services96 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

125 services96 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

104 services70 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

71 services71 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

54 services54 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

53 services53 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

46 services45 patients

Ultrasound of heart blood flow, valves and chambers, follow-up 93321

This procedure, an echocardiogram, uses sound waves to create images of your heart. It aids in assessing your heart's blood flow, chambers, and valves. It's a follow-up procedure, ensuring that your heart is functioning properly post-treatment.

42 services42 patients

Ultrasound of heart with color-depicted blood flow, rate and valve function 93325

An 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.

40 services40 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician 93016

An exercise or drug-induced heart stress test with ECG involves monitoring your heart's activity while it's under stress, either from exercise or medication. A doctor supervises the entire procedure to ensure safety and accuracy in results. This test helps detect heart problems.

35 services35 patients

Ultrasound of heart, follow-up 93308

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.

28 services28 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

24 services24 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

22 services22 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

22 services22 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

13 services12 patients

Ultrasound of heart with continuous electrocardiogram (ecg) during rest, exercise and/or drug induced stress with review and report 93351

This procedure involves using ultrasound technology to create images of your heart while you rest, exercise, or undergo drug-induced stress. An ECG continuously monitors your heart's electrical activity. It helps doctors assess heart health and function.

12 services12 patients

Ultrasound of heart with probe in esophagus, with report 93312

This procedure, called a transesophageal echocardiogram, uses a small probe passed into your esophagus to capture detailed images of your heart. The report provides information about your heart's structure and function.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

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

Memorial Hospital Of South Bend

Acute Care Hospitals · South Bend, IN

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number150058

Location615 N Michigan StSouth Bend, IN 46601 · St. Joseph County

Emergency services Birthing friendly

Three Rivers Health

Acute Care Hospitals · Three Rivers, MI

4/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number230015

Location701 S Health ParkwayThree Rivers, MI 49093 · St. Joseph County

Birthing friendly

Bronson Methodist Hospital

Acute Care Hospitals · Kalamazoo, MI

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number230017

Location601 John StreetKalamazoo, MI 49007 · Kalamazoo County

Emergency services Birthing friendly

Borgess Medical Center

Acute Care Hospitals · Kalamazoo, MI

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number230117

Location1521 Gull RoadKalamazoo, MI 49048 · Kalamazoo County

Emergency services Birthing friendly

Oaklawn Hospital

Acute Care Hospitals · Marshall, MI

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number230217

Location200 N MadisonMarshall, MI 49068 · Calhoun County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 49048 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

$126.15 typical visit price

range $54.34 – $166.68

Typical copayment $31.53 (range $13.58 – $41.67)

Most-billed visit code 99204

Established Patient

$68.07 typical visit price

range $17.09 – $135.40

Typical copayment $17.01 (range $4.27 – $33.85)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

97.36/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

94.57

Improvement Activities

Reported Quality Measures

Breast Cancer Screening

Percentage of women 50-74 years of age who had a mammogram to screen for breast cancer

55%159 patients3/55-star benchmark: 96%

Colorectal Cancer Screening

Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer

68%434 patients3/55-star benchmark: 99%

Diabetes: Medical Attention for Nephropathy

The percentage of patients 18-75 years of age with diabetes who had a nephropathy screening test or evidence of nephropathy during the measurement period

100%159 patients5/55-star benchmark: 100%

Pneumococcal Vaccination Status for Older Adults

Percentage of patients 65 years of age and older who have ever received a pneumococcal vaccine

70%547 patients3/55-star benchmark: 95%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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.

WILLIAM DYER

Psychologist

1722 SHAFFER ST
KALAMAZOO, MI 49048

Kalamazoo County (269) 226-5600

PREMIER CARDIOLOGY PC

Internal Medicine (Cardiovascular Disease)

1722 SHAFFER ST, SUITE 1
KALAMAZOO, MI 49048

Kalamazoo County (269) 381-3963

DR. JOSEPH PRANO D.O.

Internal Medicine (Cardiovascular Disease)

1722 SHAFFER ST
KALAMAZOO, MI 49048

Kalamazoo County (269) 381-3963

DR. RAMONA TAN M.D.

Psychiatry & Neurology (Psychiatry)

1722 SHAFFER ST, SUITE #3
KALAMAZOO, MI 49048

Kalamazoo County (269) 337-6373

DR. ANTHONY KING

Internal Medicine (Cardiovascular Disease)

1722 SHAFFER ST, SUITE 1
KALAMAZOO, MI 49048

Kalamazoo County (269) 381-3963

SUHAIL SHEIKH M.D.

Psychiatry & Neurology (Psychiatry)

1722 SHAFFER ST, STE 3
KALAMAZOO, MI 49048

Kalamazoo County (269) 337-6373

STEPHEN NEWMAN

Marriage & Family Therapist

1722 SHAFFER ST
KALAMAZOO, MI 49048

Kalamazoo County (269) 226-5600

FRANK S SALTIEL M.D.

Internal Medicine (Interventional Cardiology)

1722 SHAFFER ST, SUITE 1
KALAMAZOO, MI 49048

Kalamazoo County (269) 381-3963

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 Gregorio Tan's NPI number?

The NPI number for Gregorio Tan is 1316926751. It was assigned to this individual provider in the NPPES registry on January 13, 2006.

Where is Gregorio Tan located?

Gregorio Tan practices at 1722 Shaffer St Suite 1, Kalamazoo, MI 49048. The listed phone number is (269) 381-3963.

What is Gregorio Tan's specialty?

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

Is Gregorio Tan enrolled in Medicare?

Yes. Gregorio Tan 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 Gregorio Tan accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 2 other insurers list Gregorio Tan 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 Gregorio Tan affiliated with any hospitals?

According to CMS data, Gregorio Tan is affiliated with Memorial Hospital Of South Bend, Three Rivers Health, Bronson Methodist Hospital, Borgess Medical Center and Oaklawn Hospital.

When was this NPI record last updated?

The NPPES record for Gregorio Tan was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 31 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.