Dr. Ngac Nguyen Phan , MD
General Practice • Missouri City, TX
3640 Hampton Dr
Missouri City, TX 77459
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on October 12, 2012; this date does not establish years in practice.
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Published CMS data list 4,325 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99308 — Subsequent nursing facility care with straightforward level of medical decision making, per day: 1,516 service units.
- 99307 — Subsequent nursing facility care with straightforward level of medical decision making, per day: 1,037 service units.
- 99309 — Subsequent nursing facility care with moderate level of medical decision making, per day: 458 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 12 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 377 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Mupirocin — 183 prescription fills, including refills.
- Santyl (Collagenase Clostridium Hist.) — 114 prescription fills, including refills.
- Nystatin — 43 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 5 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 90% of clinicians listed under General Practice in Texas (2024, 172 clinicians with data). Median for this group: 341. Middle half: 100 to 1,551.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 4,919 in 2020 to 4,325 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
3640 Hampton Dr
Missouri City, TX 77459
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Bethesda, MD. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 1 group name: Colleagues In Wound Care Llc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2011
What Public CMS Data Show
General Practice: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
607 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $315,670 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.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
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 $240,566 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
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
377 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
$53,595 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
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.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $15.32 in 2024
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2024.
Years since graduation
15 years (graduated 2011)
CMS Doctors and Clinicians data list 2011 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2012
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.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
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?”
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Phan 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.
Can order Medicare-covered services
CMS lists Dr. Phan 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.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
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.
Compared with the same specialty in Missouri City and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 90% of clinicians listed under General Practice in Texas (2024, 172 clinicians with data). Median for this group: 341. Middle half: 100 to 1,551.
Too few clinicians listed under General Practice in Missouri City have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 95% of clinicians listed under General Practice in Texas (2024, 172 clinicians with data). Median for this group: $28,596. Middle half: $8,918 to $83,485.
Too few clinicians listed under General Practice in Missouri City have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 90% of clinicians listed under General Practice in Texas (2024, 172 clinicians with data). Median for this group: $19,146. Middle half: $6,451 to $65,134.
Too few clinicians listed under General Practice in Missouri City have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
Close to the middle for clinicians listed under General Practice in Texas (2024, 221 clinicians with data). Median for this group: 452. Middle half: 78 to 2,858.
Too few clinicians listed under General Practice in Missouri City have Medicare Part D data for 2024 to compare.
Part D drug cost
Close to the middle for clinicians listed under General Practice in Texas (2024, 221 clinicians with data). Median for this group: $17,804. Middle half: $993 to $222,529.
Too few clinicians listed under General Practice in Missouri City have Medicare Part D data for 2024 to compare.
4 active clinicians are listed under General Practice with a practice address in Missouri City, TX (1,066 in Texas).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 12% from 4,919 in 2020 to 4,325 in 2024.
- 2020: 4,919
- 2021: 5,853
- 2022: 5,756
- 2023: 4,424
- 2024: 4,325
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Medicare-allowed amount
Medicare-allowed amount decreased 12% from $359,846 in 2020 to $315,670 in 2024.
- 2020: $359,846
- 2021: $407,950
- 2022: $408,087
- 2023: $321,149
- 2024: $315,670
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Paid by Medicare
Paid by Medicare decreased 14% from $278,821 in 2020 to $240,566 in 2024.
- 2020: $278,821
- 2021: $318,963
- 2022: $314,086
- 2023: $247,972
- 2024: $240,566
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 186% from 132 in 2020 to 377 in 2024.
- 2020: 132
- 2021: 94
- 2022: 142
- 2023: 157
- 2024: 377
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30-day fills
30-day fills increased 186% from 132 in 2020 to 377 in 2024.
- 2020: 132
- 2021: 94
- 2022: 142
- 2023: 157
- 2024: 377
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Part D drug cost
Part D drug cost increased 87% from $28,698 in 2020 to $53,595 in 2024.
- 2020: $28,698
- 2021: $34,721
- 2022: $21,799
- 2023: $67,680
- 2024: $53,595
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $122.07 in 2019 to $15.32 in 2024.
- 2019: $122.07
- 2024: $15.32
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2024), 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
Program year 2024 (payments made January 1 – December 31, 2024): fewer than 11 records totaling $15.32.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Smith+Nephew, Inc. |
Food and Beverage
In-kind items and services
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COLLAGENASE SANTYL | General | $15.32 |
Source: CMS Open Payments, program year 2024, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2018–2023 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, 2019–2024; 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 |
|---|---|---|---|---|
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99308
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more
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1,516 | 347 | $151.54 | $73.22 |
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99307
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes
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1,037 | 296 | $81.70 | $39.61 |
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99309
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes
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458 | 245 | $218.40 | $106.02 |
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99304
Initial nursing facility care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes
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362 | 359 | $163.61 | $79.26 |
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11043
Removal of muscle and/or tissue, 20.0 sq cm or less
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342 | 102 | $477.66 | $152.82 |
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11042
Removal of skin and tissue, 20.0 sq cm or less
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325 | 108 | $263.99 | $57.43 |
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99307
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes
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92 | 53 | $81.85 | $39.43 |
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99308
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more
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78 | 38 | $151.81 | $72.41 |
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11046
Removal of muscle and/or tissue, each additional 20.0 sq cm or less
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38 | 18 | $151.42 | $53.99 |
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11045
Removal of skin and tissue, each additional 20.0 sq cm or less
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36 | 11 | $82.67 | $25.75 |
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99348
Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes
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27 | 11 | $155.56 | $76.04 |
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99304
Initial nursing facility care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes
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14 | 14 | $163.57 | $79.05 |
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.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Mupirocin | Mupirocin | 183 | 1,433 | $2,897.05 | 80 |
| Santyl | Collagenase Clostridium Hist. | 114 | 1,196 | $46,094.00 | 61 |
| Nystatin | Nystatin | 43 | 497 | $788.15 | 15 |
| Metronidazole | Metronidazole | 24 | 165 | $3,636.64 | — |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 13 | 187 | $179.40 | — |
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
NUCC Taxonomy Code: 208D00000X
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
NUCC Taxonomy Code: 2084P0800X
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
NUCC Taxonomy Code: 208D00000X
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - GENERAL PRACTICE
I20190617000772
TX
5395078885
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Colleagues In Wound Care Llc
4422 Riverstone Blvd, Missouri City, TX 774597150
Phone: 5127924402
Secondary Practice Locations
8901 Wisconsin Ave, Bldg 19 Room 6407
Bethesda, MD 20889
Phone: 3012954503
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Obstetrics & Gynecology
Doctor of Medicine (M.D.)
Surgery
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 3640 HAMPTON DR, MISSOURI CITY, TX 77459 (Tel: 7138061855)
Registered at PO BOX 392556, PITTSBURGH, PA 152519556 (Tel: 7138061855)
NPI status registered as active in NPPES database
Registered at 8901 WISCONSIN AVE, BLDG 19 ROOM 6407, BETHESDA, MD 20889 (Tel: 3012954503)
Registered at 8901 WISCONSIN AVE, BLDG 19 ROOM 6407, BETHESDA, MD 20889 (Tel: 3012954503)
Recorded as NGAC PHAN, MD
Psychiatry & Neurology (license number reported to NPPES: VA 0116025291)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Mailing Address
Po Box 392556
Pittsburgh, PA 152519556
Phone: 7138061855