DR. SANTIAGO C RAMIREZ MD
NPI 1023096203
Internal Medicine - Interventional Cardiology in Tucson, AZ

Q: What is Santiago Ramirez's NPI number?

The NPI number for Santiago Ramirez is 1023096203. It was assigned to this individual provider in the NPPES registry on January 6, 2006.

Q: What is Santiago Ramirez's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.

Q: When was this NPI record last updated?

The NPPES record for Santiago Ramirez was last updated on September 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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 06, 2006PECOS EnrolledAccepts Medicare Assignment

47.32/100

CMS Quality Rating

3925 E FORT LOWELL RD STE 105, TUCSON, AZ 85712(520) 229-0085(520) 229-0086 Get Directions Write a Review

NPPES record last updated: September 3, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 3, 2025, Jul 10, 2025, May 16, 2025 and 3 more (6 updates tracked since 2016).

On this page

About Dr. Santiago C Ramirez Md NPPES

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

DR. SANTIAGO C RAMIREZ MD (NPI 1023096203) is an individual interventional cardiology provider in Tucson, Arizona, licensed in Arizona (18477) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Nogales, and is a graduate of University Of Arizona College Of Medicine (1986).

NPPES Registry Identity

NPI1023096203

Entity TypeIndividualMale

Primary Taxonomy207RI0011X

Provider Legal NameDR. SANTIAGO C RAMIREZCredential: MD

Location Address3925 E FORT LOWELL RD STE 105Tucson, AZ 85712-1053

Mailing Address3925 E Fort Lowell Rd Ste 105Tucson, AZ 85712-1053 · (520) 229-0085 · Fax (520) 229-0086

Phone(520) 229-0085

Fax(520) 229-0086

Sole ProprietorNo

Medical School CMSUniversity Of Arizona College Of MedicineGraduated 1986

Enumeration DateJanuary 6, 2006

Last NPPES UpdateSeptember 3, 20256 updates tracked since enumeration

NPPES CertifiedSeptember 3, 2025

✔ NPI 1023096203 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Interventional CardiologyAllopathic & Osteopathic Physicians

Taxonomy Code207RI0011X

License✔ Licensed in AZ · 18477

Definition

An area of medicine within the subspecialty of cardiology, which uses specialized imaging and other diagnostic techniques to evaluate blood flow and pressure in the coronary arteries and chambers of the heart and uses technical procedures and medications to treat abnormalities that impair the function of the cardiovascular system.

Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License 18477 (AZ)

3925 E FORT LOWELL RD STE 105, Tucson, AZ 85712

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Secondary Practice Location 1

Location 11815 N Mastick WayNogales, AZ 85621-1046 · Phone (520) 415-1027 · Fax (520) 229-0086

Other Identifiers 1

Medicaid284430AZ

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter Health, Blue Cross Blue Shield of Arizona and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Santiago C Ramirez 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 ID9739189531

PECOS Enrollment IDI20061229000167

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.

Medicare Billing Reassignments

Medicare enrollment records show Santiago Ramirez reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Old Pueblo Cardiology PC

0.1 mi

Cardiovascular Disease

3955 E FORT LOWELL RD, SUITE 113
Tucson, AZ 85712

Reassigned Medicare billing, Arizona enrollment
9 clinicians in this Medicare group

NPI 1568643229 (520) 323-7277

Tucson Medical Center

2.0 mi

General Acute Care Hospital

5301 E GRANT RD
Tucson, AZ 85712

Reassigned Medicare billing, Arizona enrollment
95 clinicians in this Medicare group

NPI 1174512792 (520) 324-2535

Santiago C. Ramirez MD PLLC

62 mi

Cardiovascular Disease

1815 N MASTICK WAY
Nogales, AZ 85621

Reassigned Medicare billing, Arizona enrollment
7 clinicians in this Medicare group

NPI 1912457649 (520) 415-1027

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 28

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.

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.

845 services412 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An 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.

637 services381 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.

413 services338 patients

Injection, regadenoson, 0.1 mg J2785

Regadenoson injection, 0.1 mg, is a medication used to help visualize the heart during a stress test. It works by increasing blood flow in the arteries of the heart. It's injected into a vein and is generally well-tolerated.

248 services61 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.

159 services75 patients

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.

140 services134 patients

Technetium tc-99m sestamibi, diagnostic, per study dose A9500

Technetium Tc-99m Sestamibi is a diagnostic test used to create images of your heart or breast tissues. It involves a safe radioactive substance injection that helps doctors to detect any abnormalities or changes in these tissues.

120 services60 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.

86 services67 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.

84 services77 patients

Programming of dual lead pacemaker system 93280

Programming of a dual lead pacemaker system is a procedure to adjust your heart's pacemaker settings. This process involves a small device, called a programmer, that communicates with your pacemaker to ensure it's working optimally for your heart's needs.

78 services39 patients

Ultrasound of heart blood flow, valves and chambers 93320

An ultrasound of your heart, also known as an echocardiogram, is a test that uses sound waves to create detailed images of your heart. It helps doctors check the health of your heart's chambers, valves, and blood flow.

75 services75 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.

75 services75 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.

75 services75 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.

61 services61 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.

61 services60 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) 93017

An exercise or drug-induced heart stress test with an ECG checks how your heart responds to stress. You'll either exercise on a treadmill or be given medication to stress your heart. An ECG then captures your heart's activity, helping detect any issues.

60 services60 patients

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

56 services56 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

49 services49 patients

Ultrasound of both sides of head and neck blood flow 93880

An ultrasound of the head and neck blood flow is a safe, non-invasive procedure that uses sound waves to create images of blood vessels. It helps detect abnormalities like blockages or clots, ensuring optimal blood flow.

42 services41 patients

Evaluation of cardiac rhythm monitor system, remote up to 30 days 93298

This procedure involves remotely monitoring your heart rhythm for up to 30 days. A small device will record your heart's activity, which can be accessed by your healthcare team. This aids in diagnosing any irregularities or issues with your heart function.

35 services14 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.

27 services23 patients

Ultrasound study of arm and leg arteries 93922

An ultrasound study of arm and leg arteries is a non-invasive procedure that uses sound waves to create images of your arteries. It helps in checking blood flow, identifying blockages, or detecting other abnormalities in your arteries.

26 services23 patients

Ultrasound of leg arteries or artery grafts 93925

An ultrasound of leg arteries or artery grafts is a non-invasive imaging test. It uses high-frequency sound waves to capture live images from inside your body, specifically your leg arteries or grafts. This helps in detecting any blockages or abnormalities.

25 services22 patients

Complete ultrasound of aorta, vena cava, groin vessels or bypass grafts 93978

This procedure involves using sound waves to create images of your aorta, vena cava, groin vessels, or bypass grafts. It helps to detect abnormalities or blockages, ensuring your blood flows smoothly. It's painless and non-invasive.

23 services23 patients

Ultrasound study of arm or leg veins with compression and maneuvers 93970

An ultrasound study of arm or leg veins with compression and maneuvers is a non-invasive procedure that uses sound waves to create images of your veins. This helps identify blood clots or other vein problems. During the procedure, pressure is applied to the veins and certain movements are performed to assess blood flow.

21 services14 patients

Electrocardiogram (ecg) 2-day continuous with review and report by health care professional 93224

An Electrocardiogram (ECG) is a non-invasive test that records the electrical activity of your heart. In a 2-day continuous ECG, sensors attached to your chest monitor your heart's rhythm over 48 hours. A healthcare professional then reviews the data to identify any irregularities.

18 services18 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

18 services18 patients

Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist 93458

This procedure involves placing a tube into your left lower heart chamber and coronary artery. It helps doctors diagnose heart conditions by allowing them to view these areas in detail. A radiologist will review the images to ensure accurate diagnosis.

14 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85712 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

$127.71 typical visit price

range $55.44 – $168.60

Typical copayment $31.92 (range $13.86 – $42.15)

Most-billed visit code 99204

Established Patient

$98.00 typical visit price

range $17.72 – $137.41

Typical copayment $24.50 (range $4.43 – $34.35)

Most-billed visit code 99214

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.

47.32/100

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

Individually scored

Quality

57.89

Improvement Activities

Cost

80.53

Other Providers at the Same Location NPPES 4

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

IMRAN ATA MD PLLC

Internal Medicine (Cardiovascular Disease)

3925 E FORT LOWELL RD STE 105
TUCSON, AZ 85712

Pima County (520) 229-0085

PULSE CARDIOLOGY, LLC

Internal Medicine (Cardiovascular Disease)

3925 E FORT LOWELL RD STE 105
TUCSON, AZ 85712

Pima County (520) 229-0085

DR. DAVID I LAPAN MD

Internal Medicine (Cardiovascular Disease)

3925 E FORT LOWELL RD STE 105
TUCSON, AZ 85712

Pima County (520) 229-0085

DR. JUAN ARTURO SIORDIA JR. M.D.

Internal Medicine (Interventional Cardiology)

3925 E FORT LOWELL RD STE 105
TUCSON, AZ 85712

Pima County (520) 229-0085

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 Santiago Ramirez's NPI number?

The NPI number for Santiago Ramirez is 1023096203. It was assigned to this individual provider in the NPPES registry on January 6, 2006.

Where is Santiago Ramirez located?

Santiago Ramirez practices at 3925 E Fort Lowell Rd Ste 105, Tucson, AZ 85712. The listed phone number is (520) 229-0085.

What is Santiago Ramirez's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.

Is Santiago Ramirez enrolled in Medicare?

Yes. Santiago Ramirez 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.

Which organizations bill Medicare for Santiago Ramirez's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Santiago Ramirez reassigns Medicare benefits to 3 organizations: Old Pueblo Cardiology PC (Tucson, AZ), Tucson Medical Center (Tucson, AZ) and Santiago C. Ramirez MD PLLC (Nogales, AZ). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Santiago Ramirez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Santiago Ramirez accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Blue Cross Blue Shield of Arizona and UnitedHealthcare list Santiago Ramirez 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.

When was this NPI record last updated?

The NPPES record for Santiago Ramirez was last updated on September 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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.