MUSTAQEEM A SIDDIQUI MBBS
NPI 1669480133
Internal Medicine - Hematology & Oncology in Sacramento, CA

Q: What is Mustaqeem Siddiqui's NPI number?

The NPI number for Mustaqeem Siddiqui is 1669480133. It was assigned to this individual provider in the NPPES registry on August 3, 2006.

Q: What is Mustaqeem Siddiqui's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Active since August 03, 2006PECOS EnrolledAccepts Medicare Assignment

2800 L ST # 260, SACRAMENTO, CA 95816(916) 733-4400 Get Directions Write a Review

NPPES record last updated: July 17, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 17, 2026, Jul 10, 2026, Aug 20, 2020 and 1 more (4 updates tracked since 2019).

On this page

About Mustaqeem A Siddiqui Mbbs NPPES

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

MUSTAQEEM A SIDDIQUI MBBS (NPI 1669480133) is an individual hematology & oncology provider in Sacramento, California, licensed in California (A137424) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Mayo Clinic Hospital Rochester, and is a graduate of Other (2002).

NPPES Registry Identity

NPI1669480133

Entity TypeIndividualMale

Primary Taxonomy207RH0003X

Provider Legal NameMUSTAQEEM A SIDDIQUICredential: MBBS

Location Address2800 L ST # 260Sacramento, CA 95816-5616

Mailing AddressPo Box 255228Sacramento, CA 95865-5228

Phone(916) 733-4400

Sole ProprietorNo

Medical School CMSOtherGraduated 2002

Enumeration DateAugust 3, 2006

Last NPPES UpdateJuly 17, 20264 updates tracked since enumeration

NPPES CertifiedJuly 17, 2026

✔ NPI 1669480133 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

Licenses✔ Licensed in CA · A137424✔ Licensed in MN · 48757

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

Also ListedInternal MedicineTaxonomy 207R00000X · License 48757 (MN)

Also ListedInternal Medicine · HematologyTaxonomy 207RH0000X · License 48757 (MN)

2800 L ST # 260, Sacramento, CA 95816

Open in Google Maps ↗

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

Mustaqeem A Siddiqui Mbbs 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 ID6800890609

PECOS Enrollment IDI20060911000228, I20260604003351

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 Mustaqeem Siddiqui reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Sutter Valley Medical Foundation

8.8 mi

Multi-Specialty

2700 GATEWAY OAKS DR
Sacramento, CA 95833

Reassigned Medicare billing, California enrollment
3,056 clinicians in this Medicare group

NPI 1952327256 (800) 470-0071

Mayo Clinic

1,546 mi

Infectious Disease

200 1ST ST SW
Rochester, MN 55905

Reassigned Medicare billing, Minnesota enrollment
6,534 clinicians in this Medicare group

NPI 1114343860 (507) 284-2511

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 11

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, remdesivir, 1 mg J0248

Remdesivir is a medication administered via injection to treat severe cases of COVID-19 in hospital settings. It works by inhibiting the virus's ability to replicate within your body. The dosage is based on your medical condition and response to treatment.

3,000 services22 patients

Injection, romosozumab-aqqg, 1 mg J3111

Romosozumab-aqqg is a medication given by injection to treat osteoporosis in patients at high risk for fractures. It works by increasing bone mass and strength, reducing the risk of fractures.

2,520 services11 patients

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

The Gammagard Liquid injection is a type of immune globulin therapy. It's used to boost your body's immune system, helping it fight off infections. The therapy involves injecting a liquid form of proteins, collected from healthy donors, into your body. This is a 500mg dose.

1,700 services14 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.

140 services95 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.

73 services21 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

72 services72 patients

Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 96365

This is a procedure where a medical professional inserts a small tube into your vein to deliver medication, nutrients, or fluids directly into your bloodstream. This can be for treatment, prevention, or diagnosis. The process typically takes less than an hour.

65 services57 patients

Telephone, internet, or electronic health record assessment and management with written report by consulting physician, at least 5 minutes 99451

This service involves a consulting physician assessing your health condition via a phone or internet interaction. The doctor will spend at least 5 minutes discussing your health concerns. Afterwards, a written report summarizing the findings and recommendations will be provided for your reference.

42 services42 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

38 services31 patients

Infusion into a vein for therapy, prevention, or diagnosis, each additional hour 96366

This procedure involves delivering medication, fluids, or nutrients directly into your vein. This is done to treat, prevent, or diagnose various conditions. Each additional hour refers to the extended time you may need to receive these substances for optimal results.

26 services13 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.

18 services16 patients

Hospital Affiliations CMS Care Compare 2

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

Mayo Clinic Hospital Rochester

Acute Care Hospitals · Rochester, MN

5/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number240010

Location1216 Second Street SouthwestRochester, MN 55902 · Olmsted County

Emergency services Birthing friendly

Mayo Clinic Health System Eau Claire Hospital

Acute Care Hospitals · Eau Claire, WI

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520070

Location1221 Whipple StEau Claire, WI 54703 · Eau Claire County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95816 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

$180.85 typical visit price

range $60.44 – $180.85

Typical copayment $45.21 (range $15.11 – $45.21)

Most-billed visit code 99205

Established Patient

$105.95 typical visit price

range $19.88 – $148.15

Typical copayment $26.48 (range $4.97 – $37.03)

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.

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 Mustaqeem Siddiqui's NPI number?

The NPI number for Mustaqeem Siddiqui is 1669480133. It was assigned to this individual provider in the NPPES registry on August 3, 2006.

Where is Mustaqeem Siddiqui located?

Mustaqeem Siddiqui practices at 2800 L St # 260, Sacramento, CA 95816. The listed phone number is (916) 733-4400.

What is Mustaqeem Siddiqui's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Mustaqeem Siddiqui enrolled in Medicare?

Yes. Mustaqeem Siddiqui 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 Mustaqeem Siddiqui's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mustaqeem Siddiqui reassigns Medicare benefits to 2 organizations: Sutter Valley Medical Foundation (Sacramento, CA) and Mayo Clinic (Rochester, MN). 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 Mustaqeem Siddiqui's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Mustaqeem Siddiqui affiliated with any hospitals?

According to CMS data, Mustaqeem Siddiqui is affiliated with Mayo Clinic Hospital Rochester and Mayo Clinic Health System Eau Claire Hospital.

When was this NPI record last updated?

The NPPES record for Mustaqeem Siddiqui was last updated on July 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.