DR. ATHER A SIDDIQI MD
NPI 1508893702
Radiology - Radiation Oncology in The Woodlands, TX

Q: What is Ather Siddiqi's NPI number?

The NPI number for Ather Siddiqi is 1508893702. It was assigned to this individual provider in the NPPES registry on June 26, 2006.

Q: What is Ather Siddiqi's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Q: When was this NPI record last updated?

The NPPES record for Ather Siddiqi was last updated on October 16, 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.

Active since June 26, 2006PECOS EnrolledAccepts Medicare Assignment

72.39/100

CMS Quality Rating

17198 ST LUKES WAY STE 100, THE WOODLANDS, TX 77384(936) 266-4330 Get Directions Write a Review

NPPES record last updated: October 16, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 16, 2023, May 18, 2016 (2 updates tracked since 2016).

On this page

About Dr. Ather A Siddiqi Md NPPES

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

DR. ATHER A SIDDIQI MD (NPI 1508893702) is an individual radiation oncology provider in The Woodlands, Texas, licensed in Texas (K9905) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Hca Houston Healthcare Northwest, and maintains a secondary practice location in The Woodlands.

NPPES Registry Identity

NPI1508893702

Entity TypeIndividualMale

Primary Taxonomy2085R0001X

Provider Legal NameDR. ATHER A SIDDIQICredential: MD

Location Address17198 ST LUKES WAY STE 100The Woodlands, TX 77384-8013

Mailing Address17521 St Lukes WayThe Woodlands, TX 77384-8039 · (936) 266-4330 · Fax (281) 364-0028

Phone(936) 266-4330

Sole ProprietorNo

Medical School CMSOtherGraduated 1997

Enumeration DateJune 26, 2006

Last NPPES UpdateOctober 16, 20232 updates tracked since enumeration

NPPES CertifiedOctober 16, 2023

✔ NPI 1508893702 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0001X

License✔ Licensed in TX · K9905

Definition

A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.

Also ListedInternal MedicineTaxonomy 207R00000X · License K9905 (TX)

17198 ST LUKES WAY STE 100, The Woodlands, TX 77384

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Secondary Practice Location 1

Location 125511 Budde Rd, SUITE 1201The Woodlands, TX 77380-2080 · Phone (281) 364-1707 · Fax (281) 364-0028

Other Identifiers 5

OtherTXB143937TX · Medicare Ptan

OtherTXB148263TX · Medicare Ptan

Medicaid1057911111TX

Medicaid105791110TX

OtherTXB143927TX · Medicare Ptan

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, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Ather A Siddiqi 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 ID8325008055

PECOS Enrollment IDI20041015000884

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 Ather Siddiqi reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Baylor St. Luke's Medical Group

0.2 mi

Internal Medicine

17350 ST LUKES WAY STE 400
The Woodlands, TX 77384

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

NPI 1740485879 (936) 266-3513

Hospital Docs PA

9.7 mi

Internal Medicine

15595 ZOE LOOP DR
Montgomery, TX 77316

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

NPI 1871792309 (936) 588-6300

Greater Houston Radiation Oncology, P.A.

13 mi

Radiation Oncology

1140A CYPRESS STATION DR
Houston, TX 77090

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

NPI 1477553477 (281) 377-7555

Lonestar Hospital Medicine Associates, PA

189 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

Hospital Medicine Services Of Tx, PLLC

193 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

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 16

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.

Ct guidance for insertion of radiation therapy fields 77014

CT guidance for insertion of radiation therapy fields involves using a CT scan to accurately map the area of your body where radiation will be applied. This ensures the radiation targets only the necessary area, minimizing impact to healthy tissues.

465 services22 patients

Calculation of radiation therapy dose 77300

Radiation therapy dose calculation is a process to determine the exact amount of radiation needed to treat a specific area in the body. This calculation helps ensure the treatment is effective while minimizing harm to healthy tissues. It's a key part of planning your radiation therapy.

167 services38 patients

Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy G6002

Stereoscopic x-ray guidance is a technique used in radiation therapy. It involves taking multiple X-ray images from different angles to create a 3D picture of the area to be treated. This helps accurately pinpoint the exact location for radiation delivery, ensuring the therapy is as effective as possible.

127 services11 patients

Radiation treatment management, 5 treatment sessions 77427

Radiation treatment management involves a series of 5 sessions where targeted radiation is used to destroy or shrink cancer cells in your body. Each session is carefully planned to maximize effectiveness while minimizing harm to healthy tissues. You may experience side effects which will be closely monitored and managed for your comfort.

124 services30 patients

Design and construction of complex radiation treatment device 77334

The design and construction of a complex radiation treatment device is a process where a specialized instrument is created. This device targets harmful cells with high-energy rays to destroy or damage them, while minimizing impact on healthy cells. This aids in treating conditions like cancer.

118 services38 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.

96 services53 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.

91 services49 patients

Complex radiation therapy planning 77263

Complex radiation therapy planning is a process to determine the most effective way to deliver radiation to a specific area in your body. It involves detailed imaging to map your body's structure, allowing for precise targeting of cancer cells while sparing healthy tissue.

34 services33 patients

Design and construction of radiation treatment device for high precision radiation therapy 77338

A radiation treatment device is custom-made for each patient to target cancer cells with high precision. It's designed to focus radiation on the tumor, sparing healthy tissue. This process ensures effective therapy while minimizing side effects.

29 services22 patients

High precision radiation therapy planning 77301

High precision radiation therapy planning involves detailed mapping of your body to target cancer cells accurately. Advanced imaging techniques help identify the exact location of the tumor, minimizing harm to healthy tissues. This personalized approach enhances effectiveness and reduces side effects.

24 services20 patients

Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved 77290

This procedure involves collecting necessary data to plan the best radiation treatment. It may cover 3 or more areas or any area requiring special attention. Data collection includes imaging scans and tests to understand the disease's extent and to tailor a precise, effective treatment plan.

20 services14 patients

Obtaining data needed to develop the optimal radiation treatment, 1 treatment area 77280

This procedure involves gathering essential information to create the best radiation treatment plan for a specific area. It includes scanning the treatment area and using this data to calculate the precise dose of radiation needed to target the disease effectively, while sparing healthy tissue.

18 services12 patients

3d radiation therapy planning 77295

3D radiation therapy planning is a procedure that uses computer imaging to map out the area needing treatment. This ensures the radiation targets the disease precisely, while minimizing exposure to surrounding healthy tissues. It's a key step in preparing for effective radiation therapy.

18 services15 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.

18 services18 patients

Special radiation treatment 77470

Special radiation treatment is a medical procedure that uses high-energy rays to destroy or damage cancer cells. It's a targeted approach that aims to minimize harm to healthy tissues. The treatment duration varies based on individual health conditions.

14 services14 patients

Design and construction of simple radiation treatment device 77332

A simple radiation treatment device is designed and built to target specific areas in your body with high energy rays. This process is carefully planned to ensure that the radiation accurately reaches the area needing treatment, while minimizing exposure to healthy tissues.

13 services12 patients

Hospital Affiliations CMS Care Compare 4

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

Hca Houston Healthcare Northwest

Acute Care Hospitals · Houston, TX

3/5 CMS rating

OwnershipProprietary

CMS Certification Number450638

Location710 Cypress Creek ParkwayHouston, TX 77090 · 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

St Luke's The Woodlands Hospital

Acute Care Hospitals · The Woodlands, TX

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number450862

Location17200 St Luke's WayThe Woodlands, TX 77384 · Montgomery County

Emergency services Birthing friendly

Chi St Lukes Lakeside Hospital

Acute Care Hospitals · The Woodlands, TX

OwnershipVoluntary non-profit - Other

CMS Certification Number670059

Location17400 St Lukes WayThe Woodlands, TX 77384 · Montgomery County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77384 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

$166.88 typical visit price

range $54.84 – $166.88

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

Most-billed visit code 99205

Established Patient

$68.55 typical visit price

range $17.52 – $136.11

Typical copayment $17.13 (range $4.38 – $34.02)

Most-billed visit code 99213

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.

72.39/100

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

Scored as part of a group practice

Quality

67.52

Improvement Activities

Referred Medical Equipment & Supplies CMS DME claims 2

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

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

3 suppliers20 claims20 services$15.43 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

5 suppliers34 claims34 services$76.76 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Ather Siddiqi's NPI number?

The NPI number for Ather Siddiqi is 1508893702. It was assigned to this individual provider in the NPPES registry on June 26, 2006.

Where is Ather Siddiqi located?

Ather Siddiqi practices at 17198 St Lukes Way Ste 100, The Woodlands, TX 77384. The listed phone number is (936) 266-4330.

What is Ather Siddiqi's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Is Ather Siddiqi enrolled in Medicare?

Yes. Ather Siddiqi 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 Ather Siddiqi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ather Siddiqi reassigns Medicare benefits to 5 organizations: Baylor St. Luke's Medical Group (The Woodlands, TX), Hospital Docs PA (Montgomery, TX), Greater Houston Radiation Oncology, P.A. (Houston, TX), Lonestar Hospital Medicine Associates, PA (Mansfield, TX) and Hospital Medicine Services Of Tx, PLLC (San Antonio, TX). 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 Ather Siddiqi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ather Siddiqi 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 4 other insurers list Ather Siddiqi 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 Ather Siddiqi affiliated with any hospitals?

According to CMS data, Ather Siddiqi is affiliated with Hca Houston Healthcare Northwest, Hca Houston Healthcare Kingwood, St Luke's The Woodlands Hospital and Chi St Lukes Lakeside Hospital.

When was this NPI record last updated?

The NPPES record for Ather Siddiqi was last updated on October 16, 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.