2026 NPPES data Personal Emergency Response Attendant NPI 1639196363 M.D.
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VIVIAN MO, M.D.

Personal Emergency Response Attendant in LOS ANGELES, California. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
815
Medicare Part D claims · 122 beneficiaries · Personal Emergency Response Attendant avg: 996
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$607.42
5 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

VIVIAN MO, M.D. filed 815 Medicare Part D claims in 2023 as a Personal Emergency Response Attendant in LOS ANGELES, California, prescribing 88% generic.

815
Part D claims, 2023
88%
generic prescribing
$607.42
industry payments (Sunshine Act)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

VIVIAN MO, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

815 Top 27% higher than 73% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). This entry sits in this band. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

What does the federal data show about VIVIAN MO, M.D.?

Quality data not reported

NPI registry status

Active

Issued 07/17/2006

NPI 1639196363

Primary specialty

Personal Emergency Response Attendant

Niche

830 US NPIs in this specialty

Medicare Part D claims

815 18% vs specialty avg

2023 prescription claims

Specialty avg: 996

Specialty distribution in California

How Personal Emergency Response Attendant compares to other specialties among California providers

California providers

Personal Emergency Response Attendant share within California

1. Personal Emergency Response Attendant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Personal Emergency Response Attendant share within California

Specialty board-certification context

Estimated specialty board-certified rate — Personal Emergency Response Attendant (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Personal Emergency Response Attendant ABMS/AOA estimate

Est. board-certified rate (Personal Emergency Response Attendant) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Personal Emergency Response Attendant) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

VIVIAN MO, M.D. appears in the CMS NPPES registry as a Personal Emergency Response Attendant provider holding M.D. credentials at 1520 SAN PABLO ST, LOS ANGELES, CA, 90033, with a listed phone of (323) 442-6130. NPI 1639196363 was issued on 07/17/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MO most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 815 prescription claims written by this provider, covering 122 Medicare beneficiaries and totaling roughly $93K in drug spend, split 12% brand-name and 88% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Personal Emergency Response Attendant is a narrow specialty nationwide, with 830 enrolled providers across 48 states and an average of 996 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

1520 SAN PABLO ST
LOS ANGELES, CA 90033

Provider Details

NPI 1639196363
Specialty Personal Emergency Response Attendant
Credentials M.D.
Gender Female
NPI Issued 07/17/2006

Hospital and facility affiliations

Facilities where VIVIAN MO, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

LIFESPAN PHYSICIAN GROUP INC
PROVIDENCE, RI
USC CARE MEDICAL GROUP INC
LOS ANGELES, CA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for VIVIAN MO, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$607

Largest payer

Medtronic, Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

License & disciplinary context — California MBC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 — they are NOT specific to VIVIAN MO, M.D.. To verify VIVIAN MO, M.D.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

VIVIAN MO, M.D. — brand share 12.0%
Specialty average (est.)

12% brand-name claims vs 88% generic, on 815 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

815
Total Claims
$93K
Total Drug Cost
122
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,791
Total Day Supply
53,433
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$79K
Generic Drug Cost
$14K

Patient Demographics

Average Patient Age
75.7 years
Avg HCC Risk Score
2.47
Gender Split
55% female / 45% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What VIVIAN MO, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Atorvastatin Calcium
114
Metoprolol Succinate
79
Furosemide
66
Amlodipine Besylate
64
Carvedilol
61
Metoprolol Tartrate
45
Rosuvastatin Calcium
39
Eliquis
Apixaban
33
Potassium Chloride
28
Xarelto
Rivaroxaban
27

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Personal Emergency Response Attendant Overview

How VIVIAN MO, M.D. fits within the Personal Emergency Response Attendant landscape nationally.

830
Personal Emergency Response Attendant Providers in US
48
States with Personal Emergency Response Attendant
996
Avg Claims per Provider

VIVIAN MO, M.D.'s 815 claims are below the specialty average of 996.

Nearby Personal Emergency Response Attendant Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as MO.

Compare Personal Emergency Response Attendant nationally: see state-by-state distribution →

Frequently Asked Questions

What is VIVIAN MO, M.D.'s specialty?
VIVIAN MO, M.D. specializes in Personal Emergency Response Attendant and practices in LOS ANGELES, California. Credentials: M.D..
How much does VIVIAN MO, M.D. prescribe under Medicare Part D?
In 2023, VIVIAN MO, M.D. wrote 815 Medicare Part D claims totaling $93K in drug costs for 122 beneficiaries.
Where is VIVIAN MO, M.D. located?
VIVIAN MO, M.D. is located at 1520 SAN PABLO ST, LOS ANGELES, CA, 90033. Phone: (323) 442-6130.
What is VIVIAN MO, M.D.'s NPI number?
VIVIAN MO, M.D.'s National Provider Identifier (NPI) is 1639196363, issued on 07/17/2006.
Does VIVIAN MO, M.D. prescribe more brand-name or generic drugs?
VIVIAN MO, M.D.'s prescribing is 12% brand-name and 88% generic drugs by claim count, with $79K in brand drug costs.
How many Personal Emergency Response Attendant providers are there in the US?
There are 830 Personal Emergency Response Attendant providers across 48 states in the US. The average Personal Emergency Response Attendant provider writes 996 Medicare Part D claims per year.
What drugs does VIVIAN MO, M.D. prescribe most often?
Based on 2023 Medicare Part D data, VIVIAN MO, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Metoprolol Succinate, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does VIVIAN MO, M.D. accept Medicare?
VIVIAN MO, M.D. appears in CMS Medicare data with 815 Part D claims and 122 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify VIVIAN MO, M.D.'s credentials?
VIVIAN MO, M.D.'s NPI is 1639196363 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology