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DR. SHIRLEY PAK SO M.D.
NPI 1639466592
Internal Medicine - Geriatric Medicine in Worcester, MA

Active since June 29, 2011PECOS EnrolledAccepts Medicare Assignment
97.02/100
CMS Quality Rating
291 LINCOLN ST, WORCESTER, MA 01605(508) 334-6251(508) 334-6906 Get Directions Write a Review

NPPES record last updated: May 1, 2022. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Dec 22, 2020, Oct 8, 2020 (2 updates tracked since 2020).

About Dr. Shirley Pak So M.d. NPPES

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

DR. SHIRLEY PAK SO M.D. (NPI 1639466592) is an individual geriatric medicine provider in Worcester, Massachusetts, licensed in Massachusetts (249041) and active in the NPI registry since June 2011. She is enrolled in Medicare PECOS and is a graduate of Other (2004).

NPPES Registry Identity

NPI1639466592
Entity TypeIndividualFemale
Primary Taxonomy207RG0300X
Provider Legal NameDR. SHIRLEY PAK SOCredential: M.D.
Location Address291 LINCOLN STWorcester, MA 01605-3643
Mailing AddressPo Box 415348Boston, MA 02241-5348 · (800) 225-8885 · Fax (508) 334-8105
Phone(508) 334-6251
Fax(508) 334-6906
Sole ProprietorNo
Medical School CMSOtherGraduated 2004
Enumeration DateJune 29, 2011
Last NPPES UpdateMay 1, 20222 updates tracked since enumeration
NPPES CertifiedMay 1, 2022
✔ NPI 1639466592 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RG0300X
License✔ Licensed in MA · 249041
Definition
An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.
291 LINCOLN ST, Worcester, MA 01605
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

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

Dr. Shirley Pak So 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 ID7113198243
PECOS Enrollment IDI20110922000164
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 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.

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.
192 services74 patients
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.
165 services74 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.
133 services55 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.
87 services77 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.
72 services39 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.
46 services34 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01605 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
$177.36 typical visit price
range $58.86 – $177.36
Typical copayment $44.34 (range $14.71 – $44.34)
Most-billed visit code 99205
Established Patient
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
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.

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.

97.02/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality78.09
Promoting Interoperability100
Improvement Activities40

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.

DR. MARY R HAWTHORNE M.D.
Internal Medicine
291 LINCOLN ST
WORCESTER, MA 01605
Worcester County (508) 791-8524
DR. JAMES E FANALE M.D.
Internal Medicine
291 LINCOLN ST
WORCESTER, MA 01605
Worcester County (508) 334-6251
SEVIL HEMAYAT M.D
Internal Medicine
291 LINCOLN ST
WORCESTER, MA 01605
Worcester County (508) 791-8524
MARIAN SABA MD
Internal Medicine
291 LINCOLN ST
WORCESTER, MA 01605
Worcester County (508) 791-8524
MS. TRACY M. CORMIER NP
Nurse Practitioner
291 LINCOLN ST, EMPLOYEE HEALTH
WORCESTER, MA 01605
Worcester County (508) 793-6400
DR. HAWA OZIEN ABU MD
Internal Medicine (Geriatric Medicine)
291 LINCOLN ST
WORCESTER, MA 01605
Worcester County (508) 334-6251
DOUGLAS MISAEL PALACIOS HERNANDEZ
Internal Medicine
291 LINCOLN ST
WORCESTER, MA 01605
Worcester County (508) 799-2922
HAHNEMANN UROLOGY ASSOCIATES, INC.
Urology
291 LINCOLN ST, SUITE 201
WORCESTER, MA 01605
Worcester County (508) 755-8663

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 Shirley So's NPI number?

The NPI number for Shirley So is 1639466592. It was assigned to this individual provider in the NPPES registry on June 29, 2011.

Where is Shirley So located?

Shirley So practices at 291 Lincoln St, Worcester, MA 01605. The listed phone number is (508) 334-6251.

What is Shirley So's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.

Is Shirley So enrolled in Medicare?

Yes. Shirley So 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.

What insurance does Shirley So accept?

Health plans from Anthem Blue Cross and Blue Shield list Shirley So 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.

When was this NPI record last updated?

The NPPES record for Shirley So was last updated on May 1, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.