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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. SHARAFALI Y DIWAN M.D.
NPI 1114927290
Internal Medicine - Infectious Disease in Houston, TX

Active since July 29, 2005PECOS Enrolled
18220 TOMBALL PKWY, SUITE 230, HOUSTON, TX 77070(832) 604-0005(832) 604-0103 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Sharafali Y Diwan M.d. NPPES

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

DR. SHARAFALI Y DIWAN M.D. (NPI 1114927290) is an individual infectious disease provider in Houston, Texas, licensed in Texas (J6920) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS, is affiliated with Hca Houston Healthcare Conroe, and is a graduate of Other (1989).

NPPES Registry Identity

NPI1114927290
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameDR. SHARAFALI Y DIWANCredential: M.D.
Location Address18220 TOMBALL PKWY, SUITE 230Houston, TX 77070-4347
Mailing Address18220 Tomball Pkwy, Suite 230Houston, TX 77070-4347 · (832) 604-0005 · Fax (832) 604-0103
Phone(832) 604-0005
Fax(832) 604-0103
Sole ProprietorNo
Medical School CMSOtherGraduated 1989
Enumeration DateJuly 29, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1114927290 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in TX · J6920
Definition

An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

18220 TOMBALL PKWY, Houston, TX 77070
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections 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. Sharafali Y Diwan 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 ID9133306186
PECOS Enrollment IDI20110531000677
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 8

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.

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.
3,190 services349 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.
477 services58 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.
355 services318 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
39 services25 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.
24 services17 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.
23 services23 patients

Hospital Affiliations CMS Care Compare 5

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

Hca Houston Healthcare Conroe

Acute Care Hospitals · Conroe, TX
2/5 CMS rating
OwnershipProprietary
CMS Certification Number450222
Location504 Medical Center BlvdConroe, TX 77304 · Montgomery County
Emergency services Birthing friendly

Huntsville Memorial Hospital

Acute Care Hospitals · Huntsville, TX
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450347
Location110 Memorial Hospital DriveHuntsville, TX 77340 · Walker County
Emergency services Birthing friendly

Hca Houston Healthcare Tomball

Acute Care Hospitals · Tomball, TX
2/5 CMS rating
OwnershipProprietary
CMS Certification Number450670
Location605 HolderriethTomball, TX 77375 · Harris County
Emergency services Birthing friendly

Hca Houston Healthcare Kingwood

Acute Care Hospitals · Kingwood, TX
3/5 CMS rating
OwnershipProprietary
CMS Certification Number450775
Location22999 Us Hwy 59Kingwood, TX 77325 · Harris County
Emergency services Birthing friendly

Houston Methodist Willowbrook Hospital

Acute Care Hospitals · Houston, TX
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450844
Location18220 State Highway 249Houston, TX 77070 · Harris County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77070 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
$134.06 typical visit price
range $58.24 – $176.98
Typical copayment $33.51 (range $14.56 – $44.24)
Most-billed visit code 99204
Established Patient
$102.71 typical visit price
range $18.60 – $143.93
Typical copayment $25.67 (range $4.65 – $35.98)
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.

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.

MRS. CHRISTINA MARCUCCI MS, RD, LD
Dietitian, Registered
18220 TOMBALL PKWY, SUITE 300
HOUSTON, TX 77070
Harris County (281) 748-9050
NORTHWEST HOUSTON HEART CENTER,PA
Internal Medicine (Cardiovascular Disease)
18220 TOMBALL PKWY, SUITE, 205
HOUSTON, TX 77070
Harris County (281) 351-4911
DANIELLE SHERRELLE COMEAUX PA
Physician Assistant
18220 TOMBALL PKWY, SUITE 400
HOUSTON, TX 77070
Harris County (281) 737-0999
NELLY A HEIMAN MD
Obstetrics & Gynecology
18220 TOMBALL PKWY, SUITE 100
HOUSTON, TX 77070
Harris County (281) 737-1320
DR. DALBIR S PUREWAL M.D.
Family Medicine
18220 TOMBALL PKWY, SUITE 400
HOUSTON, TX 77070
Harris County (281) 737-0570
JIMMY HUU DO PHARMD
Pharmacist
18220 TOMBALL PKWY
HOUSTON, TX 77070
Harris County (281) 737-1411
CHUONG H. PHAM, MD, PA
Obstetrics & Gynecology
18220 TOMBALL PKWY, SUITE 210
HOUSTON, TX 77070
Harris County (832) 237-0222
DIMPLE V SHAH M.D.
Internal Medicine
18220 TOMBALL PKWY, SUITE 155
HOUSTON, TX 77070
Harris County (281) 469-5400

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 Sharafali Diwan's NPI number?

The NPI number for Sharafali Diwan is 1114927290. It was assigned to this individual provider in the NPPES registry on July 29, 2005.

Where is Sharafali Diwan located?

Sharafali Diwan practices at 18220 Tomball Pkwy Suite 230, Houston, TX 77070. The listed phone number is (832) 604-0005.

What is Sharafali Diwan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Sharafali Diwan enrolled in Medicare?

Yes. Sharafali Diwan 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 Sharafali Diwan accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 3 other insurers list Sharafali Diwan 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 Sharafali Diwan affiliated with any hospitals?

According to CMS data, Sharafali Diwan is affiliated with Hca Houston Healthcare Conroe, Huntsville Memorial Hospital, Hca Houston Healthcare Tomball, Hca Houston Healthcare Kingwood and Houston Methodist Willowbrook Hospital.

When was this NPI record last updated?

The NPPES record for Sharafali Diwan was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.