Dr. Gregory Manh Pham , DDS, DO
Dentist β’ Colton, CA
400 N Pepper Ave, Dept Neurosurgery Mod# 3
Colton, CA 923241801
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 1, 2009; this date does not establish years in practice.
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Published CMS data list 129 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Amoxicillin β 68 prescription fills, including refills.
- Ibuprofen β 48 prescription fills, including refills.
- Cephalexin β 13 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table Β· Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 85% of clinicians listed under Dentist in Colton, CA (2024, 15 clinicians with data). Median for this group: 68. Middle half: 37 to 106.
More Part D prescriptions than 85% of clinicians listed under Dentist in California (2024, 5,272 clinicians with data). Median for this group: 38. Middle half: 19 to 76.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 75 in 2019 to 129 in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2019β2024.
Practice Location & Contact Primary Location
400 N Pepper Ave
Dept Neurosurgery Mod# 3
Colton, CA 923241801
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Dentist: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
129 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
$481 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 β by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $300.00 across 3 records.
By nature of payment
- Education: $300.00 across 3 records.
Reporting-company totals
- Straumann USA LLC: $200.00 across 1 record.
- ZIMVIE INC.: $100.00 across 2 records.
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.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
NPI first issued
2009
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, βDoes your provider accept Medicare as full payment?β
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.
Compared with the same specialty in Colton and California
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
More Part D prescriptions than 85% of clinicians listed under Dentist in Colton, CA (2024, 15 clinicians with data). Median for this group: 68. Middle half: 37 to 106.
More Part D prescriptions than 85% of clinicians listed under Dentist in California (2024, 5,272 clinicians with data). Median for this group: 38. Middle half: 19 to 76.
Part D drug cost
A higher Part D drug cost than 75% of clinicians listed under Dentist in Colton, CA (2024, 15 clinicians with data). Median for this group: $208. Middle half: $173 to $401.
A higher Part D drug cost than 80% of clinicians listed under Dentist in California (2024, 5,272 clinicians with data). Median for this group: $154. Middle half: $75 to $339.
24 active clinicians are listed under Dentist with a practice address in Colton, CA (14,738 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Colton
0% of these 24 clinicians have the CMS telehealth indicator.
0% of these 24 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 72% from 75 in 2019 to 129 in 2024.
- 2019: 75
- 2021: 24
- 2022: 115
- 2023: 187
- 2024: 129
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30-day fills
30-day fills increased 72% from 75 in 2019 to 129 in 2024.
- 2019: 75
- 2021: 24
- 2022: 115
- 2023: 187
- 2024: 129
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Part D drug cost
Part D drug cost went from $480 in 2019 to $481 in 2024.
- 2019: $480
- 2021: $159
- 2022: $587
- 2023: $1,348
- 2024: $481
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $100.00 in 2021 to $300.00 in 2025.
- 2021: $100.00
- 2022: $263.00
- 2023: $262.74
- 2024: $50.00
- 2025: $300.00
Sources: 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 Β· 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 2025 (payments made January 1 β December 31, 2025): fewer than 11 records totaling $300.00.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Straumann USA LLC |
Education
In-kind items and services
|
β | General | $200.00 |
| ZIMVIE INC. |
Education
Cash or cash equivalent
|
3DIEMME RealGUIDE | General | $50.00 |
| ZIMVIE INC. |
Education
Cash or cash equivalent
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3DIEMME RealGUIDE | General | $50.00 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
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 |
|---|---|---|---|---|---|
| Amoxicillin | Amoxicillin | 68 | 587 | $182.63 | 59 |
| Ibuprofen | Ibuprofen | 48 | 423 | $140.19 | 45 |
| Cephalexin | Cephalexin | 13 | 140 | $158.46 | 12 |
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
Self-certified to NPPES: 2023-03-20NUCC Taxonomy Code: 122300000X
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.
NUCC Taxonomy Code: 390200000X
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Surgery
Doctor of Osteopathic Medicine (D.O.)
Physician Assistant - Surgical
Surgery - Surgical Critical Care
Doctor of Medicine (M.D.)
Otolaryngology
Doctor of Medicine (M.D.)
Surgery - Surgical Critical Care
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 1816 CALABASAS WAY DEPT, HOUSTON, TX 770802065 (Tel: 7144963931)
Recorded as GREGORY PHAM, DDS, DO
NPI status registered as active in NPPES database
Registered at 400 N PEPPER AVE, DEPT NEUROSURGERY MOD# 3, COLTON, CA 923241801 (Tel: 9095803353)
Registered at 400 N PEPPER AVE, DEPT NEUROSURGERY MOD# 3, COLTON, CA 923241801 (Tel: 9095803353)
Recorded as GREGORY PHAM, DO
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Dentists in Colton
- Dr. Rody Paz Casanova, DDS
- Dr. James Jesse, DDS
- Dr. Shabbir Makati, DDS
- Mohamed El Sayed
- Edward Pyo
- Dr. Prarthit Mehta, DDS
Mailing Address
1816 Calabasas Way Dept
Houston, TX 770802065
Phone: 7144963931