Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. Spencer Alan Lau , DO

General Practice • Honolulu, HI

Active NPI 1427194083 Individual Practitioner Male Practitioner
Practice location in NPPES

549 Halemaumau Street
Honolulu, HI 968212150

Call 8083732167 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

549 Halemaumau Street

Honolulu, HI 968212150

Telephone 8083732167
Fax 8083733330
Organization at the Same NPPES Address or Phone
Gary L. Greenly, D.o., Inc Facility NPI 1871830794

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Medicare patients

71 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.

Medicare-allowed amount

About $56,117 in 2024

The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.

Paid by Medicare

About $40,452 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.

30-day fills

3,900 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$178,902 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.

Open Payments general payments, program year 2025

All general payments: $528.52 across 4 records.

By nature of payment

  • Food and Beverage: $528.52 across 4 records.

Reporting-company totals (3 largest of 4)

  • MML US, Inc.: $176.00 across 1 record.
  • ABBVIE INC.: $125.00 across 1 record.
  • VERTEX PHARMACEUTICALS INCORPORATED: $121.85 across 1 record.

A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).

Guide: How to read an Open Payments record

NPI first issued

2007

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Lau has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Lau as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Honolulu and Hawaii

Billing and prescribing volume is not a quality rating.

Medicare Part B services

More Medicare Part B services than 65% of clinicians listed under General Practice in Hawaii (2024, 27 clinicians with data). Median for this group: 386. Middle half: 145 to 629.

Too few clinicians listed under General Practice in Honolulu have Medicare Part B data for 2024 to compare.

Medicare-allowed amount

A higher Medicare-allowed amount than 70% of clinicians listed under General Practice in Hawaii (2024, 27 clinicians with data). Median for this group: $37,965. Middle half: $12,130 to $56,667.

Too few clinicians listed under General Practice in Honolulu have Medicare Part B data for 2024 to compare.

Paid by Medicare

A higher Medicare payment amount than 70% of clinicians listed under General Practice in Hawaii (2024, 27 clinicians with data). Median for this group: $24,541. Middle half: $9,992 to $41,288.

Too few clinicians listed under General Practice in Honolulu have Medicare Part B data for 2024 to compare.

Medicare Part D prescriptions

More Part D prescriptions than 90% of clinicians listed under General Practice in Honolulu, HI (2024, 11 clinicians with data). Median for this group: 317. Middle half: 32 to 1,949.

More Part D prescriptions than 80% of clinicians listed under General Practice in Hawaii (2024, 39 clinicians with data). Median for this group: 317. Middle half: 29 to 1,426.

Part D drug cost

A higher Part D drug cost than 80% of clinicians listed under General Practice in Honolulu, HI (2024, 11 clinicians with data). Median for this group: $2,189. Middle half: $640 to $170,336.

A higher Part D drug cost than 75% of clinicians listed under General Practice in Hawaii (2024, 39 clinicians with data). Median for this group: $4,403. Middle half: $197 to $144,571.

29 active clinicians are listed under General Practice with a practice address in Honolulu, HI (171 in Hawaii).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Honolulu

13.8% of these 29 clinicians have the CMS telehealth indicator.

31% of these 29 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments · Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $528.52.

Manufacturer Payment Nature Product Type Amount ($)
MML US, Inc.
Food and Beverage
Cash or cash equivalent
ReActiv8 General $176.00
ABBVIE INC.
Food and Beverage
In-kind items and services
UBRELVY General $125.00
VERTEX PHARMACEUTICALS INCORPORATED
Food and Beverage
In-kind items and services
JOURNAVX General $121.85
Boston Scientific Corporation
Food and Beverage
In-kind items and services
General - Pain Management General $105.67

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B · Data Year 2024
Reporting Year:

CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
425 63 $261.78 $125.46
98925 Osteopathic manipulative treatment, 1-2 body regions
86 15 $62.83 $32.52

Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D · Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Oxycodone Hcl Oxycodone Hcl 811 21,936 $13,928.59 88
Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen 405 10,691 $13,160.45 55
Morphine Sulfate Er Morphine Sulfate 269 7,420 $10,180.60 30
Methadone Hcl Methadone Hcl 209 5,160 $4,425.22 26
Tramadol Hcl Tramadol Hcl 139 3,074 $1,350.31 20
Gabapentin Gabapentin 137 4,590 $1,795.52 28
Morphine Sulfate Morphine Sulfate 118 3,131 $2,862.96 18
Pregabalin Pregabalin 115 3,318 $1,983.19 18
Zolpidem Tartrate Zolpidem Tartrate 109 3,364 $1,018.07 17
Alprazolam Alprazolam 92 2,405 $858.04 12
Cyclobenzaprine Hcl Cyclobenzaprine Hcl 74 2,061 $908.61 13
Diazepam Diazepam 68 1,766 $447.43 —
Oxycontin Oxycodone Hcl 64 1,573 $59,968.26 —
Promethazine Hcl Promethazine Hcl 59 856 $895.50 13
Tizanidine Hcl Tizanidine Hcl 59 1,478 $1,135.18 12
Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen 56 1,468 $1,698.23 11
Hydromorphone Hcl Hydromorphone Hcl 46 1,126 $559.99 —
Lorazepam Lorazepam 41 777 $292.09 —
Omeprazole Omeprazole 41 2,158 $840.92 12
Carisoprodol Carisoprodol 38 1,026 $498.80 —
Buprenorphine-Naloxone Buprenorphine Hcl/Naloxone Hcl 38 1,091 $9,448.27 —
Ibuprofen Ibuprofen 35 948 $374.22 12
Atorvastatin Calcium Atorvastatin Calcium 31 2,336 $518.29 16
Trazodone Hcl Trazodone Hcl 30 901 $138.01 —
Butalbital-Acetaminophen-Caffe Butalb/Acetaminophen/Caffeine 30 814 $699.36 —

(top 25 shown)

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

General Practice Primary Specialty

NUCC Taxonomy Code: 208D00000X

License # reported to NPPES HI 565

A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Hawaii State Medical Licensing Board.
Look Up on State Board Site

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid ID
02513401 (HI)

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - GENERAL PRACTICE

Medicare Enrollment ID

I20060104000519

Enrollment State Jurisdiction

HI

PECOS Control ID

0143243279

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Career & Practice History

NPI enumerated January 30, 2007.

No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.

No reviews have been published yet. Leave a review.

NPI Administrative Meta

NPI Number: 1427194083
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: January 30, 2007
Last Update: July 08, 2007
Sole Proprietor: No

Other General Practices in Honolulu

All General Practices in Honolulu

Mailing Address

549 Halemaumau Street

Honolulu, HI 968212150

Phone: 8083732167

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.