DR. THOMAS J SHEN M.D.
NPI 1194795807
Allergy & Immunology in Leesburg, FL

Q: What is Thomas Shen's NPI number?

The NPI number for Thomas Shen is 1194795807. It was assigned to this individual provider in the NPPES registry on January 25, 2006.

Q: What is Thomas Shen's specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

Q: When was this NPI record last updated?

The NPPES record for Thomas Shen was last updated on March 17, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years 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 25, 2006PECOS EnrolledAccepts Medicare Assignment

75/100

CMS Quality Rating

8245 COUNTY ROAD 44 LEG A, SUITE 1, LEESBURG, FL 34788(352) 314-2929(352) 314-9747 Get Directions Write a Review

NPPES record last updated: March 17, 2014. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Dr. Thomas J Shen M.d. NPPES

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

DR. THOMAS J SHEN M.D. (NPI 1194795807) is an individual allergy & immunology provider in Leesburg, Florida, licensed in Florida (ME0073924) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Shands Jacksonville, and is a graduate of Other (1992).

NPPES Registry Identity

NPI1194795807

Entity TypeIndividualMale

Primary Taxonomy207K00000X

Provider Legal NameDR. THOMAS J SHENCredential: M.D.

Location Address8245 COUNTY ROAD 44 LEG A, SUITE 1Leesburg, FL 34788-3751

Mailing Address8245 County Road 44 Leg A, Suite 1Leesburg, FL 34788-3751 · (352) 314-2929 · Fax (352) 314-9747

Phone(352) 314-2929

Fax(352) 314-9747

Sole ProprietorNo

Medical School CMSOtherGraduated 1992

Enumeration DateJanuary 25, 2006

Last NPPES UpdateMarch 17, 2014

✔ NPI 1194795807 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAllergy & ImmunologyAllopathic & Osteopathic Physicians

Taxonomy Code207K00000X

License✔ Licensed in FL · ME0073924

Definition

An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.

8245 COUNTY ROAD 44 LEG A, Leesburg, FL 34788

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Other Identifiers 5

Other5923541FL · Aetna

Medicare PIN41838ZFL

Medicare UPING23772FL

Other41838FL · Blue Cross And Blueshield

Medicaid252644100FL

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Superior HealthPlan, Ambetter Health, Ambetter of Alabama 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. Thomas J Shen 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 ID3779485354

PECOS Enrollment IDI20040127000094

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 Thomas Shen reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Allergy And Asthma Care Of Florida Inc

29 mi

Allergy & Immunology

1740 SE 18TH ST, SUITE 1002
Ocala, FL 34471

Reassigned Medicare billing, Florida enrollment
11 clinicians in this Medicare group

NPI 1154367654 (352) 622-1126

Premier Allergist Of Florida LLC

113 mi

Allergy

1250 S TAMIAMI TRL STE 302
Sarasota, FL 34239

Reassigned Medicare billing, Florida enrollment
27 clinicians in this Medicare group

NPI 1427237486 (239) 549-1398

Allergy & Asthma Care Centre PA

158 mi

Clinical & Laboratory Immunology

8461 CYPRESS LAKE DRIVE
Fort Myers, FL 33919

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

NPI 1780739946 (239) 489-1398

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 18

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.

Professional service for preparation and provision of 1 or more antigens 95165

This service involves the creation and supply of antigens, substances that stimulate your immune system to fight diseases. These antigens can be used in vaccines or allergy tests to help your body build defenses against specific health threats.

10,150 services602 patients

Test for allergy using allergenic extract 95004

An allergy test with allergenic extract is a diagnostic method to identify substances causing allergic reactions. Small amounts of common allergens are introduced to your body, usually through skin pricks or blood tests. Your body's response helps determine your allergies.

5,990 services92 patients

Professional service for multiple injections of allergen 95117

The professional service for multiple injections of allergens involves administering small doses of specific allergens into your body. This is done to help your immune system become less sensitive to them, reducing your allergic reaction over time. It's a safe, effective way to manage allergies.

2,066 services202 patients

Test for allergy using skin patch 95044

A skin patch test helps identify allergens causing skin reactions. Small patches with potential allergens are applied to your skin, usually on the back. After 48 hours, they are removed to check for reactions. It's a safe and effective way to diagnose allergies.

1,945 services25 patients

Test for allergy using allergenic extract injected into skin 95024

An allergy skin test involves injecting a small amount of allergenic extract into your skin. This test helps determine if you're allergic to specific substances. If allergic, a small red bump appears at the test site. It's safe and quick.

1,163 services56 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.

484 services326 patients

Test to measure expiratory airflow and volume changes before and after medication administration 94060

This procedure measures how air flows in and out of your lungs. It's done before and after medication to see if the treatment improves your breathing. It's a simple, non-invasive test that involves breathing into a device called a spirometer.

180 services138 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

163 services137 patients

Test to determine lung volumes using sensors 94726

This test, called spirometry, measures lung capacity using sensors. You breathe into a mouthpiece attached to a device that records the amount and rate of air you inhale and exhale. It helps diagnose and monitor lung conditions.

143 services119 patients

Test to examine how well the lungs exchange gases 94729

This is a test called a pulmonary function test, which helps understand the efficiency of your lungs. It measures how much air your lungs can hold, how quickly you can move air in and out of your lungs, and how well your lungs put oxygen into and remove carbon dioxide from your blood.

142 services118 patients

Test to measure the level of nitric oxide gas 95012

A test to measure the level of nitric oxide gas helps assess inflammation in the lungs, often linked with asthma. You'll breathe into a device, and it'll provide a reading of nitric oxide levels. This helps monitor and manage respiratory conditions.

136 services102 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.

132 services132 patients

Administration and interpretation of patient-focused health risk assessment 96160

This procedure involves a detailed evaluation of your health to identify potential risks. It includes analyzing your medical history, lifestyle habits, and family health history. The results are interpreted to provide a personalized plan to improve your health and prevent future issues.

114 services99 patients

Professional service for single injection of allergen 95115

A single allergen injection is a procedure where a small amount of a specific allergen is injected into your body. This is done to test your body's reaction to the allergen or to help your immune system become less sensitive to it, reducing allergic symptoms.

96 services19 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

60 services18 patients

Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional 99211

This service involves an outpatient visit for established patients who may not need direct interaction with a healthcare professional. It could include reviewing test results, monitoring existing conditions, or adjusting treatment plans. It's typically done remotely, ensuring your comfort and convenience.

48 services35 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

33 services33 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

13 services13 patients

Hospital Affiliations CMS Care Compare 3

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

Shands Jacksonville

Acute Care Hospitals · Jacksonville, FL

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number100001

Location655 W 8th StJacksonville, FL 32209 · Duval County

Emergency services Birthing friendly

Lee Memorial Hospital

Acute Care Hospitals · Fort Myers, FL

5/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number100012

Location2776 Cleveland AveFort Myers, FL 33901 · Lee County

Emergency services Birthing friendly

Cape Coral Hospital

Acute Care Hospitals · Cape Coral, FL

4/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number100244

Location636 Del Prado BlvdCape Coral, FL 33990 · Lee County

Emergency services Birthing friendly

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.

75/100

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

Individually scored

Reported Quality Measures

Documentation of Current Medications in the Medical Record

Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.

36%2,208 patients1/55-star benchmark: 100%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…

30%1,277 patients2/55-star benchmark: 97%

Use of High-Risk Medications in the Elderly

Percentage of patients 65 years of age and older who were ordered high-risk medications. Two rates are submitted. 1) Percentage of patients who were ordered at least one high-risk medication.

Lower rates are better for this measure.

Patients 2+: 0% · 784 patients

0%784 patients5/55-star benchmark: 100%

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.

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

7 suppliers162 claims530 services$18.23 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 supplier13 claims13 services$35.42 avg. paid by Medicare

Injection, immune globulin (cuvitru), 100 mg J1555

Treatment-Injections and Infusions (nononcologic) · category RI008N

3 suppliers40 claims13,480 services$11.71 avg. paid by Medicare

Injection, immune globulin (hizentra), 100 mg J1559

Treatment-Injections and Infusions (nononcologic) · category RI008N

6 suppliers121 claims39,190 services$9.51 avg. paid by Medicare

Injection, immune globulin, (gammagard liquid), non-lyophilized, (e.g., liquid), 500 mg J1569

Treatment-Injections and Infusions (nononcologic) · category RI008N

2 suppliers13 claims1,040 services$35.70 avg. paid by Medicare

Injection, immune globulin/hyaluronidase, (hyqvia), 100 mg immuneglobulin J1575

Treatment-Injections and Infusions (nononcologic) · category RI008N

1 supplier13 claims3,900 services$12.28 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 2

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

DR. EUGENE PO TAN M.D.

Pediatrics

8245 COUNTY ROAD 44 LEG A, SUITE 2
LEESBURG, FL 34788

Lake County (352) 326-3366

ALLERGY ASTHMA & IMMUNOLOGY CENTER, INC

Specialist

8245 COUNTY ROAD 44 LEG A, SUITE 1
LEESBURG, FL 34788

Lake County (352) 314-2929

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 Thomas Shen's NPI number?

The NPI number for Thomas Shen is 1194795807. It was assigned to this individual provider in the NPPES registry on January 25, 2006.

Where is Thomas Shen located?

Thomas Shen practices at 8245 County Road 44 Leg A Suite 1, Leesburg, FL 34788. The listed phone number is (352) 314-2929.

What is Thomas Shen's specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

Is Thomas Shen enrolled in Medicare?

Yes. Thomas Shen 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 Thomas Shen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Shen reassigns Medicare benefits to 3 organizations: Allergy And Asthma Care Of Florida Inc (Ocala, FL), Premier Allergist Of Florida LLC (Sarasota, FL) and Allergy & Asthma Care Centre PA (Fort Myers, FL). 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 Thomas Shen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Thomas Shen accept?

Health plans from Ambetter Health, Ambetter from Superior HealthPlan, Ambetter of Alabama, AvMed and Florida Blue (BlueCross BlueShield FL) and 4 other insurers list Thomas Shen 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 Thomas Shen affiliated with any hospitals?

According to CMS data, Thomas Shen is affiliated with Shands Jacksonville, Lee Memorial Hospital and Cape Coral Hospital.

When was this NPI record last updated?

The NPPES record for Thomas Shen was last updated on March 17, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years 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.