SIMIN SIDDIQ M.D.
NPI 1255362422
Internal Medicine in Fremont, CA

Q: What is Simin Siddiq's NPI number?

The NPI number for Simin Siddiq is 1255362422. It was assigned to this individual provider in the NPPES registry on July 6, 2006.

Q: What is Simin Siddiq'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 Simin Siddiq was last updated on April 15, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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 July 06, 2006PECOS EnrolledAccepts Medicare Assignment

2333 MOWRY AVE, SUITE 300, FREMONT, CA 94538(510) 796-0222(510) 796-7760 Get Directions Write a Review

NPPES record last updated: April 15, 2010. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Simin Siddiq M.d. NPPES

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

SIMIN SIDDIQ M.D. (NPI 1255362422) is an individual internal medicine provider in Fremont, California, licensed in California (A38666) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1977).

NPPES Registry Identity

NPI1255362422

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameSIMIN SIDDIQCredential: M.D.

Location Address2333 MOWRY AVE, SUITE 300Fremont, CA 94538

Mailing Address2333 Mowry Ave, Suite 300Fremont, CA 94538 · (510) 796-0222 · Fax (510) 796-7760

Phone(510) 796-0222

Fax(510) 796-7760

Sole ProprietorNo

Medical School CMSOtherGraduated 1977

Enumeration DateJuly 6, 2006

Last NPPES UpdateApril 15, 2010

✔ NPI 1255362422 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · A38666

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.

2333 MOWRY AVE, Fremont, CA 94538

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Other Identifiers 3

Medicare ID-Type Unspecified00A38666CA

Medicare UPINA28689CA

Medicaid00A38666CA

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

Simin Siddiq 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 ID1658282454

PECOS Enrollment IDI20050428000533

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 15

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.

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.

271 services102 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.

212 services87 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

43 services36 patients

Blood test, comprehensive group of blood chemicals 80053

A comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.

33 services28 patients

Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025

A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.

32 services29 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.

30 services30 patients

Blood test, lipids (cholesterol and triglycerides) 80061

A lipid panel is a blood test that measures fats and fatty substances, such as cholesterol and triglycerides. These substances are used by your body as a source of energy. High levels can lead to health issues, including heart disease.

29 services26 patients

Blood test, thyroid stimulating hormone (tsh) 84443

A TSH blood test measures the level of thyroid stimulating hormone in your body. This hormone is produced by the pituitary gland and regulates how your thyroid works. It's a simple procedure where a small amount of blood is drawn from your arm for analysis.

29 services25 patients

Thyroxine (thyroid chemical), free 84439

The Thyroxine (thyroid chemical), free test is a blood test that measures the level of free T4 in your body. T4 is a hormone produced by your thyroid gland and is essential for growth and metabolism. If your T4 levels are too high or too low, it could indicate a thyroid disorder.

28 services24 patients

Complete x-ray of body bones 77075

A complete x-ray of body bones is a diagnostic procedure that uses radiation to create images of your bones. This test can help detect fractures, infections, or other bone abnormalities. You'll need to stay still during the process to ensure clear images. It's a non-invasive and generally quick procedure.

20 services20 patients

Vitamin d-3 level 82306

A Vitamin D-3 level test measures the amount of Vitamin D-3, a crucial nutrient, in your body. This test helps identify if your levels are too low or too high. Low levels may lead to bone weakness, while high levels could harm your kidneys. It's a simple blood test.

20 services19 patients

Dxa bone density measurement of hip, pelvis, spine 77080

A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.

18 services18 patients

Cyanocobalamin (vitamin b-12) level 82607

A Cyanocobalamin (Vitamin B-12) level test is a blood test that checks the amount of Vitamin B-12 in your body. This vitamin is vital for nerve function and the creation of red blood cells. Low or high levels could indicate a potential health issue.

16 services16 patients

Hemoglobin a1c level 83036

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

15 services15 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.

13 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94538 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

$153.83 typical visit price

range $69.00 – $202.35

Typical copayment $38.45 (range $17.25 – $50.58)

Most-billed visit code 99204

Established Patient

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

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 3

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

13 suppliers33 claims72 services$5.78 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

7 suppliers12 claims18 services$0.91 avg. paid by Medicare

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553

DME-Other DME · category DE017N

1 supplier11 claims11 services$182.56 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 17

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. SCOTT KRAMER M.D.

Obstetrics & Gynecology (Gynecology)

2333 MOWRY AVE, SUITE 201
FREMONT, CA 94538

Alameda County (510) 796-0510

MICHELLE HTUN M.D

Internal Medicine

2333 MOWRY AVE, SUITE # 300
FREMONT, CA 94538

Alameda County (510) 796-0222

FRANK PETER HOCHMAN M.D.

Family Medicine

2333 MOWRY AVE, SUITE 300
FREMONT, CA 94538

Alameda County (510) 797-2939

DR. PADMAVATHI KUDARAVALLI MD

Internal Medicine

2333 MOWRY AVE, STE 300
FREMONT, CA 94538

Alameda County (510) 284-4100

DR. ASHIT JAIN M.D.

Internal Medicine (Cardiovascular Disease)

2333 MOWRY AVE, SUITE 300
FREMONT, CA 94538

Alameda County (510) 796-0222

CALIFORNIA CARDIOVASCULAR

Internal Medicine

2333 MOWRY AVE, SUITE 300
FREMONT, CA 94538

Alameda County (510) 796-0222

DR. EDWARD JOHN MEYER M.D.

Internal Medicine (Endocrinology, Diabetes & Metabolism)

2333 MOWRY AVE, STE 300
FREMONT, CA 94538

Alameda County (530) 899-9112

GEORGANN GERVASI-LYTTKENS PA-C, R.D.C.S.,R.V.T

Physician Assistant (Medical)

2333 MOWRY AVE, SUITE #220
FREMONT, CA 94538

Alameda County (510) 792-2012

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 Simin Siddiq's NPI number?

The NPI number for Simin Siddiq is 1255362422. It was assigned to this individual provider in the NPPES registry on July 6, 2006.

Where is Simin Siddiq located?

Simin Siddiq practices at 2333 Mowry Ave Suite 300, Fremont, CA 94538. The listed phone number is (510) 796-0222.

What is Simin Siddiq's specialty?

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

Is Simin Siddiq enrolled in Medicare?

Yes. Simin Siddiq 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.

When was this NPI record last updated?

The NPPES record for Simin Siddiq was last updated on April 15, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.