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AMMAR HASAN MD
NPI 1215596523
Internal Medicine in Kingwood, TX

Active since June 10, 2019PECOS EnrolledAccepts Medicare Assignment
22999 HIGHWAY 59 N, KINGWOOD, TX 77339(281) 348-3322 Get Directions Write a Review

NPPES record last updated: June 21, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 21, 2023, Dec 7, 2022, Jun 10, 2019 (3 updates tracked since 2019).

About Ammar Hasan Md NPPES

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

AMMAR HASAN MD (NPI 1215596523) is an individual internal medicine provider in Kingwood, Texas, licensed in Texas (T4639) and active in the NPI registry since June 2019. He is enrolled in Medicare PECOS, is affiliated with Hca Houston Healthcare Kingwood, and maintains a secondary practice location in Olympia Fields.

NPPES Registry Identity

NPI1215596523
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameAMMAR HASANCredential: MD
Location Address22999 HIGHWAY 59 NKingwood, TX 77339-4412
Mailing Address22999 Highway 59 NKingwood, TX 77339-4412 · (281) 348-3322
Phone(281) 348-3322
Sole ProprietorNo
Medical School CMSOtherGraduated 2016
Enumeration DateJune 10, 2019
Last NPPES UpdateJune 21, 20233 updates tracked since enumeration
NPPES CertifiedJune 21, 2023
✔ NPI 1215596523 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in TX · T4639✔ Licensed in IL · 036161038
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.
Also ListedHospitalistTaxonomy 208M00000X · License 036161038 (IL)
22999 HIGHWAY 59 N, Kingwood, TX 77339
Open in Google Maps ↗

Secondary Practice Location 1

Location 120201 Crawford AveOlympia Fields, IL 60461-1010 · Phone (708) 855-7297 · Fax (708) 679-2161

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Oscar Insurance Company, 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

Ammar Hasan 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 ID4688059397
PECOS Enrollment IDI20220916000462
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

6

Medicare enrollment records show Ammar Hasan reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Hospital Medicine Services Of Tx, PLLC
203 mi
Hospitalist
7700 FLOYD CURL DR
San Antonio, TX 78229
  • Reassigned Medicare billing, Texas enrollment
  • 681 clinicians in this Medicare group
NPI 1881392363 (210) 575-4000
Lonestar Hospital Medicine Associates, PA
205 mi
Hospitalist
2700 E BROAD ST
Mansfield, TX 76063
  • Reassigned Medicare billing, Texas enrollment
  • 994 clinicians in this Medicare group
NPI 1518237429 (682) 622-2000
Inpatient Consultants Of Illinois, P.C.
655 mi
Internal Medicine
12125 WOODCREST EXECUTIVE DR, SUITE 220
Saint Louis, MO 63141
  • Reassigned Medicare billing, Illinois enrollment
  • 108 clinicians in this Medicare group
NPI 1003850843 (314) 317-0600
Sound Physicians Of Illinois, LLC
660 mi
Hospitalist
12303 DE PAUL DR
Bridgeton, MO 63044
  • Reassigned Medicare billing, Illinois enrollment
  • 419 clinicians in this Medicare group
NPI 1043598865 (314) 344-6000
Insight Chicago, Inc.
918 mi
Internal Medicine
2525 S MICHIGAN AVE
Chicago, IL 60616
  • Reassigned Medicare billing, Illinois enrollment
  • 354 clinicians in this Medicare group
NPI 1881261006 (312) 567-2000
Hospitalist Physicians Of Indiana, PC
943 mi
Hospitalist
7950 W JEFFERSON BLVD
Fort Wayne, IN 46804
  • Reassigned Medicare billing, Indiana enrollment
  • 309 clinicians in this Medicare group
NPI 1306576277 (260) 435-7001

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 5

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.
287 services117 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.
91 services56 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
55 services55 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
39 services39 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.
36 services36 patients

Hospital Affiliations CMS Care Compare

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

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77339 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.

JAMES TODD ANDREWS MD
Otolaryngology (Otolaryngology/Facial Plastic Surgery)
22999 HIGHWAY 59 N
HUMBLE, TX 77339
Harris County (281) 358-2314
NORTHEAST OB/GYN ASSOCIATES, LLP
Obstetrics & Gynecology (Obstetrics)
22999 HIGHWAY 59 N, STE 150
KINGWOOD, TX 77339
Harris County (281) 358-7623
MR. DAVID ALLEN POWELL AGACNP-BC
Nurse Practitioner (Acute Care)
22999 HIGHWAY 59 N
KINGWOOD, TX 77339
Harris County (281) 348-8000
DR. HONG M THAI MD
Internal Medicine
22999 HIGHWAY 59 N
KINGWOOD, TX 77339
Harris County (281) 348-8000
DHRUV TRUSHATKUMAR PATEL MD
Internal Medicine
22999 HIGHWAY 59 N
KINGWOOD, TX 77339
Harris County (281) 348-8000
SARAH REENE GRANT MD
Student in an Organized Health Care Education/Training Program
22999 HIGHWAY 59 N
KINGWOOD, TX 77339
Harris County (713) 301-7587
MICHAEL PACIFICO CONDE NP
Nurse Practitioner (Acute Care)
22999 HIGHWAY 59 N
KINGWOOD, TX 77339
Harris County (281) 348-8000
DARRA AGUILAR AGACNP-BC
Nurse Practitioner (Acute Care)
22999 HIGHWAY 59 N
KINGWOOD, TX 77339
Harris County (281) 348-8530

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 Ammar Hasan's NPI number?

The NPI number for Ammar Hasan is 1215596523. It was assigned to this individual provider in the NPPES registry on June 10, 2019.

Where is Ammar Hasan located?

Ammar Hasan practices at 22999 Highway 59 N, Kingwood, TX 77339. The listed phone number is (281) 348-3322.

What is Ammar Hasan's specialty?

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

Is Ammar Hasan enrolled in Medicare?

Yes. Ammar Hasan 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 Ammar Hasan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ammar Hasan reassigns Medicare benefits to 6 organizations: Hospital Medicine Services Of Tx, PLLC (San Antonio, TX), Lonestar Hospital Medicine Associates, PA (Mansfield, TX), Inpatient Consultants Of Illinois, P.C. (Saint Louis, MO), Sound Physicians Of Illinois, LLC (Bridgeton, MO), Insight Chicago, Inc. (Chicago, IL) and 1 more organization, listed in the Medicare section above. 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 Ammar Hasan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ammar Hasan accept?

Health plans from Blue Cross and Blue Shield of Texas, Oscar Insurance Company and UnitedHealthcare list Ammar Hasan 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 Ammar Hasan affiliated with any hospitals?

According to CMS data, Ammar Hasan is affiliated with Hca Houston Healthcare Kingwood.

When was this NPI record last updated?

The NPPES record for Ammar Hasan was last updated on June 21, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.