Dr. Diego Hernan Granja, MD, MS
- Medicare services, 2024
- 367
- Medicare patients, 2024
- 136
- Part D claims, 2024
- 364
- Hospital affiliations
- 3
- Industry payments
- $340
- Practice address
- 710 Cypress Creek Parkway, Houston, TX 77090
- Practice phone
- Call (281) 440-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Granja's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Diego Hernan Granja is an internist in Houston, Texas
Dr. Granja practices at HCA Houston Healthcare Northwest in Houston, Texas, part of HCA Healthcare.
Dr. Granja's NPI, 1417260811, was assigned on July 14, 2010. Dr. Granja graduated from Universidad Central del Ecuador School of Medicine in 2004. Dr. Granja holds Texas license U1020.
- NPI
- 1417260811NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9234363086
- NPI enumeration date
- July 14, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (281) 440-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Diego Hernan Granja practices at 2 locations in Houston, Texas
Dr. Granja's primary practice is HCA Houston Healthcare Northwest, at 710 Cypress Creek Parkway, Houston, TX 77090 in Harris County. The practice phone is (281) 440-1000. Dr. Granja also practices at Northwest Houston Hospital, 709 Cypress Station Dr, Houston, TX 77090.
- HCA Houston Healthcare NorthwestPrimary710 Cypress Creek Parkway, Houston, TX 77090 · Harris CountyPhone(281) 440-1000
- Northwest Houston Hospital709 Cypress Station Dr, Houston, TX 77090 · Harris CountyPhone(281) 440-2105
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Diego Hernan Granja is affiliated with 3 sites of care and 2 medical groups
Dr. Granja's primary practice is HCA Houston Healthcare Northwest in Houston, Texas, part of HCA Healthcare. Dr. Granja is also affiliated with HCA Houston Healthcare West. The medical group on file is Baylor Medicine. Dmand AI also links Dr. Granja to 1 more hospital and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Diego Hernan Granja's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Granja practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| HCA Houston Healthcare Northwest | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Diego Hernan Granja is one of 8,437 internists in Texas
Internal medicine is Dr. Granja's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Granja is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Granja's licenses on file in 10 states: Texas, Missouri, Ohio, Alabama, Florida, Delaware, Louisiana, North Carolina, Oklahoma and Connecticut.
Specialties and state licenses
- Internal medicine, TexasPrimary
- Missouri license
- Ohio license
- Alabama license
- Florida license
- Delaware license
- Louisiana license
- North Carolina license
- Oklahoma license
- Connecticut license
Clinical focus
Dmand AI lists acute stomach ulcer, anemia, bile duct problems, cardiac arrhythmia, cellulitis, circulation problems, circulatory problems in extremities and cirrhosis among the conditions Dr. Granja treats.
Internists near Dr. Granja
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Diego Hernan Granja billed Medicare for 367 services in 2024
CMS data shows 367 Medicare services from Dr. Granja across 4 procedure codes in 2024, for 136 Medicare patients. Medicare paid $31,979 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Granja's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6112024: 36740%
Dr. Granja compared with the Texas median for internists, 2024
- Dr. Granja
- Texas median
- Medicare services
- 367vs 53932% below
- Medicare patients
- 136vs 19028% below
- Part D claims
- 161vs 28944% below
Medians across 7,794 internists in Texas with Dmand AI profiles that report each measure.
Dr. Granja's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Granja?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Granja and other internists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Diego Hernan Granja treated 136 Medicare patients in 2024, average age 73
CMS counts 136 Medicare patients who saw Dr. Granja in 2024. The largest group is 65 to 74, with 50 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 32% are also on Medicaid. Their average risk score is 2.85, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Granja's median patient age at 66, with 47% women.
Dr. Granja's Medicare patients by age, 2024
Dr. Granja's Medicare patients by sex, 2024
- Women7757%
- Men5943%
Chronic conditions among Dr. Granja's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease62%
- Diabetes59%
- Heart failure53%
- Arthritis51%
- Ischemic heart disease51%
- Mood disorders51%
Share of Medicare patients with each condition. A patient can have several.
Dr. Granja's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women47%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Diego Hernan Granja wrote 364 Medicare Part D claims in 2024
In 2024, Dr. Granja wrote 364 Medicare Part D claims for 128 patients. 90% of them were for generic drugs. CMS names the drug for 161 of them, across 11 drugs with 11 or more claims each, at $643 in total drug cost. In 2023, CMS named 102 claims across 6 drugs.
Dr. Granja's Part D claims by kind of drug, 2024
- Generic327 claims90%
- Brand-name and other37 claims10%
Dr. Granja's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Granja's Part D claims, 2024
- Opioids7%24 of 364 claims
- Antibiotics21%78 of 364 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1022024: 16158%
Drugs named by CMS: 11 in 2024, 6 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Diego Hernan Granja takes part in Medicare
Dr. Granja accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Diego Hernan Granja received $340 in industry payments from 2018 to 2024
CMS Open Payments shows 16 general payments to Dr. Granja from 13 drug and device companies from 2018 to 2024. Food and beverage make up the largest share, 100% of the total. Insmed, Inc. paid the most, $112.
General payments to Dr. Granja by program year, 2018 to 2024
Companies that paid Dr. Granja the most, 2018 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Diego Hernan Granja graduated from Universidad Central del Ecuador School of Medicine
Dr. Granja graduated from Universidad Central del Ecuador School of Medicine in 2004.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Diego Hernan Granja accepts plans from 21 insurance carriers
Dr. Granja is in network with 21 carriers, including United Healthcare, Blue Cross Blue Shield of Michigan and Aetna. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Aetna
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- Elevance
- HCSC
- Regence Health Plans
- +13 more carriersWith a free account
Plan types Dr. Granja accepts, by number of carriers
- PPO10
- HMO8
- Medicare5
- POS4
- Medicaid3
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Diego Hernan Granja's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Diego Hernan Granja
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Diego Hernan Granja's NPI number?
Dr. Diego Hernan Granja's NPI number is 1417260811. It was assigned on July 14, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Diego Hernan Granja?
Dr. Diego Hernan Granja is an internist in Houston, Texas. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Diego Hernan Granja practice?
Dr. Granja practices at 710 Cypress Creek Parkway, Houston, TX 77090. Dr. Granja also practices at 709 Cypress Station Dr, Houston, TX 77090. Dr. Granja's primary practice is HCA Houston Healthcare Northwest in Houston, Texas, part of HCA Healthcare. Dmand AI also links Dr. Granja to 1 hospital and 1 medical group.
What is Dr. Diego Hernan Granja's office phone number?
The practice phone on file for Dr. Granja is (281) 440-1000.
What is Dr. Diego Hernan Granja's medical license number?
Dr. Granja holds Texas license U1020, one of the licenses on file in 10 states.
Which states has Dr. Diego Hernan Granja been licensed in?
Dmand AI has state licenses on file for Dr. Granja in Texas (2022 to 2026), Missouri (2018 to 2024), Ohio (2013 to 2019), Alabama (2013 to 2017), Florida (2014 to 2016), Delaware (2013 to 2015), Louisiana (2014 to 2015), North Carolina (2014 to 2015), Oklahoma (2014 to 2015) and Connecticut (2012 to 2013).
Which hospitals is Dr. Diego Hernan Granja affiliated with?
Dr. Granja practices at HCA Houston Healthcare Northwest in Houston, Texas. Dr. Granja is also affiliated with HCA Houston Healthcare West. Dmand AI links Dr. Granja to 1 more hospital.
What medical group is Dr. Diego Hernan Granja part of?
Dr. Granja is linked to Baylor Medicine. Dmand AI links Dr. Granja to 1 more medical group.
Does Dr. Diego Hernan Granja accept Medicare?
Yes. CMS data shows Dr. Granja billed Medicare for 367 services in 2024, and Dr. Granja accepts Medicare assignment.
How many Medicare patients does Dr. Diego Hernan Granja see?
CMS counts 136 Medicare patients who saw Dr. Granja in 2024, with an average age of 73.
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Is Dr. Diego Hernan Granja board certified?
Yes. Dr. Granja is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Diego Hernan Granja bill to Medicare?
In 2024, Dr. Granja's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and hospital inpatient care (99239).
Where did Dr. Diego Hernan Granja go to medical school?
Dr. Granja graduated from Universidad Central del Ecuador School of Medicine in 2004.
What drugs does Dr. Diego Hernan Granja prescribe most?
In 2024 Medicare Part D data, Dr. Granja's most prescribed drugs by claims were Cefdinir, Atorvastatin Calcium and Amlodipine Besylate.
Has Dr. Diego Hernan Granja received payments from drug or device companies?
CMS Open Payments shows $340 in general payments to Dr. Granja from 13 companies from 2018 to 2024. The largest total came from Insmed, Inc.
How long has Dr. Diego Hernan Granja been practicing?
Dr. Granja graduated from medical school in 2004, 22 years ago.
What insurance does Dr. Diego Hernan Granja accept?
Dr. Granja is in network with 21 carriers, including United Healthcare, Blue Cross Blue Shield of Michigan and Aetna. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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