PATRICK A SIAW M.D.
NPI 1922039213
Internal Medicine in Buffalo, NY

Q: What is Patrick Siaw's NPI number?

The NPI number for Patrick Siaw is 1922039213. It was assigned to this individual provider in the NPPES registry on July 5, 2006.

Q: What is Patrick Siaw'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 Patrick Siaw was last updated on December 7, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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 05, 2006PECOS EnrolledAccepts Medicare Assignment

2157 MAIN ST, BUFFALO, NY 14214(716) 862-1984(716) 862-1891 Get Directions Write a Review

NPPES record last updated: December 7, 2011. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Patrick A Siaw M.d. NPPES

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

PATRICK A SIAW M.D. (NPI 1922039213) is an individual internal medicine provider in Buffalo, New York, licensed in New York (211163) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Kaleida Health, and is a graduate of Other (1989).

NPPES Registry Identity

NPI1922039213

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NamePATRICK A SIAWCredential: M.D.

Location Address2157 MAIN STBuffalo, NY 14214-2648

Mailing Address2157 Main StBuffalo, NY 14214-2648 · (716) 862-1984 · Fax (716) 862-1891

Phone(716) 862-1984

Fax(716) 862-1891

Sole ProprietorNo

Medical School CMSOtherGraduated 1989

Enumeration DateJuly 5, 2006

Last NPPES UpdateDecember 7, 2011

✔ NPI 1922039213 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in NY · 211163

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.

2157 MAIN ST, Buffalo, NY 14214

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Other Identifiers 5

Other000525325005NY · Blue Cross Of Wny

Medicare ID-Type UnspecifiedCC3259NY · Medicare B

Medicare UPING88990

Other00010370101NY · Univera

Other0410363NY · Independent Health

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

Patrick A Siaw 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 ID1355329996

PECOS Enrollment IDI20040710000232

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

Mobile Physician Services PLLC

3.8 mi

Family Medicine

40 LA RIVIERE DR STE 201
Buffalo, NY 14202

Reassigned Medicare billing, New York enrollment
129 clinicians in this Medicare group

NPI 1194132415 (337) 991-9276

Physician Mobile Medical Care PC

3.8 mi

Internal Medicine

40 LA RIVIERE DR STE 500
Buffalo, NY 14202

Reassigned Medicare billing, New York enrollment
127 clinicians in this Medicare group

NPI 1518765502 (337) 408-0797

Partners Medical Group, PLLC

6.7 mi

Geriatric Medicine

2700 N FOREST RD
Getzville, NY 14068

Reassigned Medicare billing, New York enrollment
46 clinicians in this Medicare group

NPI 1184305153 (716) 639-3311

Blt Medical Group, LLP

8.4 mi

Family Medicine

1026 UNION RD
West Seneca, NY 14224

Reassigned Medicare billing, New York enrollment
25 clinicians in this Medicare group

NPI 1386671816 (716) 712-1030

Care Connect Medical P.C.

288 mi

General Practice

520 WHITE PLAINS RD STE 500
Tarrytown, NY 10591

Reassigned Medicare billing, New York enrollment
76 clinicians in this Medicare group

NPI 1457032328 (888) 789-9585

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 10

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 nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309

A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.

410 services72 patients

Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309

207 services47 patients

Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more 99306

An initial nursing facility visit is your first meeting with your healthcare team at a nursing facility. Lasting typically 45 minutes, this appointment involves a comprehensive health assessment and the creation of your personalized care plan. It's a crucial step to ensure your health and well-being.

50 services48 patients

Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes 99310

A follow-up nursing facility visit is a routine check-up that typically lasts about 35 minutes. During this visit, your health status is evaluated, any changes in your condition are noted, and necessary adjustments to your care plan are made. It's an essential part of maintaining your health.

41 services22 patients

Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more 99306

39 services37 patients

Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more 99308

A follow-up nursing facility visit per day is a daily check-up service provided by healthcare professionals. It lasts around 15 minutes and involves assessing your health status, monitoring your recovery progress, and addressing any concerns you may have about your health or treatment.

36 services21 patients

Hospital Affiliations CMS Care Compare 2

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

Kaleida Health

Acute Care Hospitals · Buffalo, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330005

Location100 High StreetBuffalo, NY 14210 · Erie County

Emergency services Birthing friendly

Sisters Of Charity Hospital

Acute Care Hospitals · Buffalo, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330078

Location2157 Main StreetBuffalo, NY 14214 · Erie County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 14214 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

$126.40 typical visit price

range $54.87 – $166.88

Typical copayment $31.60 (range $13.71 – $41.72)

Most-billed visit code 99204

Established Patient

$97.08 typical visit price

range $17.54 – $136.14

Typical copayment $24.27 (range $4.38 – $34.03)

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.

Referred Medical Equipment & Supplies CMS DME claims 6

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

Insertion tray with drainage bag with indwelling catheter, foley type, two-way latex with coating (teflon, silicone, silicone elastomer or hydrophilic, etc.) A4314

DME-Orthotic Devices · category DF000N

1 supplier18 claims18 services$22.30 avg. paid by Medicare

Urinary catheter anchoring device, leg strap, each A4334

DME-Orthotic Devices · category DF000N

1 supplier18 claims18 services$4.50 avg. paid by Medicare

Bedside drainage bag, day or night, with or without anti-reflux device, with or without tube, each A4357

DME-Orthotic Devices · category DF000N

1 supplier19 claims20 services$8.93 avg. paid by Medicare

Enteral feeding supply kit; syringe fed, per day, includes but not limited to feeding/flushing syringe, administration set tubing, dressings, tape B4034

Other-Enteral and Parenteral · category OB006N

1 supplier22 claims308 services$2.18 avg. paid by Medicare

Enteral formula, nutritionally complete, calorically dense (equal to or greater than 1.5 kcal/ml) with intact nutrients, includes proteins, fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4152

Other-Enteral and Parenteral · category OB006N

1 supplier15 claims3,814 services$0.24 avg. paid by Medicare

Standard wheelchair K0001

DME-Wheelchairs · category DD000N

2 suppliers22 claims23 services$20.64 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 20

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

DAVID MAY P.T.

Physical Therapist