DR. SUMBUL ISLAM M.D.
NPI 1992898860
Internal Medicine in Sherman, TX

Q: What is Sumbul Islam's NPI number?

The NPI number for Sumbul Islam is 1992898860. It was assigned to this individual provider in the NPPES registry on October 2, 2006.

Q: What is Sumbul Islam's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Sumbul Islam was last updated on March 4, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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 October 02, 2006PECOS EnrolledAccepts Medicare Assignment

600 E TAYLOR ST STE 3011, SHERMAN, TX 75090(903) 957-0417(903) 957-0242 Get Directions Write a Review

NPPES record last updated: March 4, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 4, 2020, Feb 7, 2020, Apr 9, 2018 and 1 more (4 updates tracked since 2017).

On this page

About Dr. Sumbul Islam M.d. NPPES

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

DR. SUMBUL ISLAM M.D. (NPI 1992898860) is an individual internal medicine provider in Sherman, Texas, licensed in Texas (R4240) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS, is affiliated with Texoma Medical Center, and is a graduate of Other (1994).

NPPES Registry Identity

NPI1992898860

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameDR. SUMBUL ISLAMCredential: M.D.

Location Address600 E TAYLOR ST STE 3011Sherman, TX 75090-2850

Mailing Address600 E Taylor St Ste 3011Sherman, TX 75090-2850 · (903) 957-0417 · Fax (903) 957-0242

Phone(903) 957-0417

Fax(903) 957-0242

Sole ProprietorNo

Medical School CMSOtherGraduated 1994

Enumeration DateOctober 2, 2006

Last NPPES UpdateMarch 4, 20204 updates tracked since enumeration

NPPES CertifiedMarch 4, 2020

✔ NPI 1992898860 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in TX · R4240

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

600 E TAYLOR ST STE 3011, Sherman, TX 75090

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Other Identifiers 1

Medicaid3753980-03TX

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Cigna Healthcare, UnitedHealthcare.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. Sumbul Islam 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 ID1759355589

PECOS Enrollment IDI20170911000125

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 Reassignment

Medicare enrollment records show Sumbul Islam reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Visiting Doctors, PLLC

Same address

Internal Medicine

600 E TAYLOR ST STE 3011
Sherman, TX 75090

Reassigned Medicare billing, Texas enrollment
2 clinicians in this Medicare group

NPI 1902382641 (903) 957-0417

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 17

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.

Injection, dexamethasone sodium phosphate, 1 mg J1100

Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.

711 services51 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.

445 services225 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.

400 services158 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.

116 services59 patients

Management using the results of remote vital sign monitoring per calendar month, first 20 minutes 99457

This service involves reviewing and managing your health data, which is remotely monitored and collected. Your vital signs like heart rate and blood pressure are tracked regularly throughout the month. The first 20 minutes of this data analysis per month is included in this service.

86 services22 patients

Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians a G0179

This procedure involves a doctor or approved practitioner reviewing your health status and re-certifying your need for Medicare-covered home health services. It includes communication with the home health agency and assessment of your health reports, even when you're not physically present.

84 services35 patients

Telephone medical discussion with physician, 11-20 minutes 99442

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

81 services57 patients

Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days 99454

This service involves using devices to remotely track body functions like heart rate or blood pressure. These devices, provided initially, record data daily or send alerts if readings are abnormal. The service is renewed every 30 days.

61 services16 patients

Transitional care management services for problem of high complexity 99496

Transitional care management services are designed to ensure a smooth transition from a hospital to home or another care setting for patients with complex health issues. These services include medication management, patient education, and coordination with healthcare providers.

55 services35 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

54 services54 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.

42 services42 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

41 services41 patients

Injection, ketorolac tromethamine, per 15 mg J1885

Ketorolac tromethamine is a medication administered through injection, often used to manage moderate to severe pain. Each 15 mg dose helps to reduce hormones causing inflammation and pain in the body. It is not recommended for long-term use.

36 services15 patients

Telephone medical discussion with physician, 21-30 minutes 99443

This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.

32 services29 patients

Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180

This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.

32 services26 patients

Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit G0438

An annual wellness visit is a yearly appointment with your doctor to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's an opportunity to discuss your health status and goals and get a plan tailored for you.

27 services27 patients

Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month 99490

Chronic care management services involve a healthcare professional directing clinical staff in managing your chronic conditions. This includes the first 20 minutes per month of services like medication management, care coordination, and health monitoring to help improve your health and quality of life.

16 services16 patients

Hospital Affiliations CMS Care Compare 3

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

Texoma Medical Center

Acute Care Hospitals · Denison, TX

3/5 CMS rating

OwnershipProprietary

CMS Certification Number450324

Location5016 S Us Highway 75Denison, TX 75020 · Grayson County

Emergency services Birthing friendly

Wilson N Jones Regional Medical Center

Acute Care Hospitals · Sherman, TX

3/5 CMS rating

OwnershipProprietary

CMS Certification Number450469

Location500 N Highland AvenueSherman, TX 75091 · Grayson County

Emergency services Birthing friendly

Baylor Scott And White Surgical Hospital At Sherma

Acute Care Hospitals · Sherman, TX

2/5 CMS rating

OwnershipPhysician

CMS Certification Number670076

Location3601 Calais DriveSherman, TX 75090 · Grayson County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 75090 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

$126.40 typical visit price

range $54.84 – $166.88

Typical copayment $31.60 (range $13.71 – $41.72)

Most-billed visit code 99204

Established Patient

$97.05 typical visit price

range $17.52 – $136.11

Typical copayment $24.26 (range $4.38 – $34.02)

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.

Referred Medical Equipment & Supplies CMS DME claims 12

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

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

9 suppliers26 claims69 services$6.83 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

4 suppliers11 claims18 services$1.21 avg. paid by Medicare

Intermittent urinary catheter; straight tip, with or without coating (teflon, silicone, silicone elastomer, or hydrophilic, etc.), each A4351

DME-Orthotic Devices · category DF008N

3 suppliers13 claims3,960 services$1.71 avg. paid by Medicare

Full face mask used with positive airway pressure device, each A7030

DME-Other DME · category DE001N

4 suppliers12 claims12 services$86.65 avg. paid by Medicare

Face mask interface, replacement for full face mask, each A7031

DME-Other DME · category DE001N

4 suppliers11 claims32 services$32.75 avg. paid by Medicare

Tubing used with positive airway pressure device A7037

DME-Other DME · category DE001N

5 suppliers14 claims14 services$17.63 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. DEBORAH R FISHER MD

Physical Medicine & Rehabilitation (Pain Medicine)

600 E TAYLOR ST STE 3011
SHERMAN, TX 75090

Grayson County (903) 957-0470

VISITING DOCTORS, PLLC

Internal Medicine

600 E TAYLOR ST STE 3011
SHERMAN, TX 75090

Grayson County (903) 957-0417

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 Sumbul Islam's NPI number?

The NPI number for Sumbul Islam is 1992898860. It was assigned to this individual provider in the NPPES registry on October 2, 2006.

Where is Sumbul Islam located?

Sumbul Islam practices at 600 E Taylor St Ste 3011, Sherman, TX 75090. The listed phone number is (903) 957-0417.

What is Sumbul Islam's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Sumbul Islam enrolled in Medicare?

Yes. Sumbul Islam 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 organization bills Medicare for Sumbul Islam's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sumbul Islam reassigns Medicare benefits to Visiting Doctors, PLLC (Sherman, TX). The 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 Sumbul Islam's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sumbul Islam accept?

Health plans from Blue Cross and Blue Shield of Texas, Cigna Healthcare and UnitedHealthcare list Sumbul Islam 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 Sumbul Islam affiliated with any hospitals?

According to CMS data, Sumbul Islam is affiliated with Texoma Medical Center, Wilson N Jones Regional Medical Center and Baylor Scott And White Surgical Hospital At Sherma.

When was this NPI record last updated?

The NPPES record for Sumbul Islam was last updated on March 4, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.