DR. MIMI RYUNG YUM M.D.
NPI 1235112996
Obstetrics & Gynecology in Brookline, MA

Active since November 26, 2005PECOS EnrolledAccepts Medicare AssignmentCLIA 22D1084460 · Microscopy
1 BROOKLINE PL STE 423, BROOKLINE, MA 02445(617) 566-1535(617) 566-0988 Get Directions Write a Review

NPPES record last updated: January 17, 2023. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Jan 17, 2023, Aug 12, 2022 (2 updates tracked since 2022).

About Dr. Mimi Ryung Yum M.d. NPPES

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

DR. MIMI RYUNG YUM M.D. (NPI 1235112996) is an individual obstetrics & gynecology provider in Brookline, Massachusetts, licensed in Massachusetts (153790) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS, holds a CLIA Microscopy certificate valid through May 22, 2028, and is a graduate of Perelman School Of Med At The University Of Pennsylvania (1993).

NPPES Registry Identity

NPI1235112996
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameDR. MIMI RYUNG YUMCredential: M.D.
Location Address1 BROOKLINE PL STE 423Brookline, MA 02445-7237
Mailing Address1 Brookline Pl Ste 423Brookline, MA 02445-7237 · (617) 566-1535 · Fax (617) 566-0988
Fax(617) 566-0988
Sole ProprietorYes
Medical School CMSPerelman School Of Med At The University Of PennsylvaniaGraduated 1993
Enumeration DateNovember 26, 2005
Last NPPES UpdateJanuary 17, 20232 updates tracked since enumeration
NPPES CertifiedOctober 23, 2022
NPI 1235112996 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License Licensed in MA · 153790
Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

1 BROOKLINE PL STE 423, Brookline, MA 02445

Other Identifiers 1

Medicaid3154971MA

Accepted 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. Mimi Ryung Yum 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 ID5799832556
PECOS Enrollment IDI20090414000011
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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 22D1084460

Mimi Yum MD · Brookline, MA
Active · expires May 22, 2028
CLIA Number22D1084460
Laboratory TypePhysician Office
Certificate Effective DateMay 23, 2026
Certificate Expiration DateMay 22, 2028
Laboratory DirectorMimi Yum MD
Laboratory Phone(617) 566-1535
Laboratory LocationMimi Yum MDOne Brookline Pl, Ste 423, Brookline, MA 02445
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

Areas of Expertise CMS Part B claims

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 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.
14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02445 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
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
Established Patient
$78.84 typical visit price
range $21.07 – $155.29
Typical copayment $19.71 (range $5.26 – $38.82)
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.

Other Providers at the Same Location NPPES 4

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

Obstetrics & Gynecology
1 BROOKLINE PL STE 423
BROOKLINE, MA 02445
Obstetrics & Gynecology
1 BROOKLINE PL STE 423
BROOKLINE, MA 02445
Obstetrics & Gynecology
1 BROOKLINE PL STE 423
BROOKLINE, MA 02445
Obstetrics & Gynecology
1 BROOKLINE PL STE 423
BROOKLINE, MA 02445

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 Mimi Yum's NPI number?

The NPI number for Mimi Yum is 1235112996. It was assigned to this individual provider in the NPPES registry on November 26, 2005.

Where is Mimi Yum located?

Mimi Yum practices at 1 Brookline Pl Ste 423, Brookline, MA 02445. The listed phone number is (617) 566-1535.

What is Mimi Yum's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Mimi Yum enrolled in Medicare?

Yes. Mimi Yum 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.

Does Mimi Yum hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 22D1084460) is associated with this NPI, valid through May 22, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Mimi Yum accept?

Health plans from Anthem Blue Cross and Blue Shield list Mimi Yum 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 Mimi Yum was last updated on January 17, 2023. NPI Profile syncs with the weekly NPPES data releases published by CMS.